1524047357208145920
1,524,047,357,208,145,920 is an even composite number composed of seven prime numbers multiplied together.
What does the number 1524047357208145920 look like?
This visualization shows the relationship between its 7 prime factors (large circles) and 1872 divisors.
1524047357208145920 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one thousand, eight hundred seventy-two divisors.
Prime factorization of 1524047357208145920:
212 × 3 × 5 × 29 × 312 × 257 × 18612
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 29 × 31 × 31 × 257 × 1861 × 1861)See below for interesting mathematical facts about the number 1524047357208145920 from the Numbermatics database.
Names of 1524047357208145920
- Cardinal: 1524047357208145920 can be written as One quintillion, five hundred twenty-four quadrillion, forty-seven trillion, three hundred fifty-seven billion, two hundred eight million, one hundred forty-five thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 1.52404735720814592 × 1018
Factors of 1524047357208145920
Divisors of 1524047357208145920
- Number of divisors d(n): 1872
-
Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 24 29 30 31 32 40 48 58 60 62 64 80 87 93 96 116 120 124 128 145 155 160 174 186 192 232 240 248 256 257 290 310 320 348 372 384 435 464 465 480 496 512 514 580 620 640 696 744 768 771 870 899 928 930 960 961 992 1024 1028 1160 1240 1280 1285 1392 1488 1536 1542 1740 1798 1856 1860 1861 1920 1922 1984 2048 2056 2320 2480 2560 2570 2697 2784 2883 2976 3072 3084 3480 3596 3712 3720 3722 3840 3844 3855 3968 4096 4112 4495 4640 4805 4960 5120 5140 5394 5568 5583 5766 5952 6144 6168 6960 7192 7424 7440 7444 7453 7680 7688 7710 7936 7967 8224 8990 9280 9305 9610 9920 10240 10280 10788 11136 11166 11532 11904 12288 12336 13485 13920 14384 14415 14848 14880 14888 14906 15360 15376 15420 15872 15934 16448 17980 18560 18610 19220 19840 20480 20560 21576 22272 22332 22359 23064 23808 23901 24672 26970 27840 27869 27915 28768 28830 29696 29760 29776 29812 30720 30752 30840 31744 31868 32896 35960 37120 37220 37265 38440 39680 39835 41120 43152 44544 44664 44718 46128 47616 47802 49344 53940 53969 55680 55738 55830 57536 57660 57691 59392 59520 59552 59624 61440 61504 61680 63488 63736 65792 71920 74240 74440 74530 76880 79360 79670 82240 83607 86304 89088 89328 89436 92256 95232 95604 98688 107880 107938 111360 111476 111660 111795 115072 115320 115382 118784 119040 119104 119248 119505 123008 123360 126976 127472 131584 139345 143840 148480 148880 149060 153760 158720 159340 161907 164480 167214 172608 173073 178176 178656 178872 184512 190464 191208 197376 215760 215876 222720 222952 223320 223590 230144 230640 230764 231043 238080 238208 238496 239010 246016 246720 246977 254944 263168 269845 278690 287680 288455 296960 297760 298120 307520 317440 318680 323814 328960 334428 345216 346146 356352 357312 357744 369024 380928 382416 394752 418035 431520 431752 445440 445904 446640 447180 460288 461280 461528 462086 476160 476416 476992 478020 478277 492032 493440 493954 509888 526336 539690 557380 575360 576910 593920 595520 596240 615040 634880 637360 647628 657920 668856 690432 692292 693129 714624 715488 738048 740931 764832 789504 809535 836070 863040 863504 865365 890880 891808 893280 894360 920576 922560 923056 924172 952320 952832 953984 956040 956554 984064 986880 987908 1019776 1052672 1079380 1114760 1150720 1153820 1155215 1191040 1192480 1230080 1234885 1274720 1295256 1315840 1337712 1380864 1384584 1386258 1429248 1430976 1434831 1476096 1481862 1529664 1579008 1619070 1672140 1673039 1726080 1727008 1730730 1781760 1783616 1786560 1788421 1788720 1841152 1845120 1846112 1848344 1904640 1905664 1907968 1912080 1913108 1968128 1973760 1975816 2039552 2158760 2229520 2301440 2307640 2310430 2382080 2384960 2391385 2460160 2469770 2549440 2590512 2631680 2675424 2761728 2769168 2772516 2858496 2861952 2869662 2952192 2963724 3059328 3158016 3238140 3344280 3346078 3452160 3454016 3461460 3463321 3465645 3567232 3573120 3576842 3577440 3682304 3690240 3692224 3696688 3704655 3811328 3815936 3824160 3826216 3936256 3947520 3951632 4079104 4317520 4459040 4602880 4615280 4620860 4764160 4769920 4782770 4920320 4939540 5019117 5098880 5181024 5263360 5350848 5365263 5523456 5538336 5545032 5716992 5723904 5739324 5904384 5927448 6118656 6476280 6688560 6692156 6904320 6908032 6922920 6926642 6931290 7134464 7146240 7153684 7154880 7162333 7174155 7380480 7384448 7393376 7409310 7622656 7631872 7648320 7652432 7895040 7903264 8158208 8365195 8635040 8918080 8942105 9205760 9230560 9241720 9528320 9539840 9565540 9840640 9879080 10038234 10197760 10362048 10389963 10701696 10730526 11046912 11076672 11090064 11433984 11447808 11478648 11808768 11854896 12237312 12952560 13377120 13384312 13808640 13816064 13845840 13853284 13862580 13870033 14268928 14292480 14307368 14309760 14324666 14348310 14760960 14768896 14786752 14818620 14826587 15263744 15296640 15304864 15790080 15806528 16316416 16730390 17270080 17316605 17836160 17884210 18411520 18461120 18483440 19056640 19079680 19131080 19681280 19758160 20076468 20395520 20724096 20779926 21403392 21461052 21486999 22153344 22180128 22867968 22895616 22957296 23709792 24474624 25095585 25905120 26754240 26768624 26826315 27617280 27632128 27691680 27706568 27725160 27740066 28537856 28584960 28614736 28619520 28649332 28696620 29521920 29537792 29573504 29637240 29653174 30527488 30593280 30609728 31613056 32632832 33460780 34540160 34633210 35672320 35768420 35811665 36922240 36966880 38113280 38159360 38262160 39516320 40152936 40791040 41448192 41559852 41610099 42806784 42922104 42973998 44306688 44360256 44479761 45791232 45914592 47419584 48949248 50191170 51810240 51864209 51949815 53508480 53537248 53652630 55234560 55264256 55383360 55413136 55450320 55480132 57075712 57169920 57229472 57239040 57298664 57393240 59043840 59075584 59147008 59274480 59306348 61186560 61219456 63226112 66921560 69080320 69266420 69350165 71344640 71536840 71623330 73844480 73933760 74132935 76318720 76524320 79032640 80305872 81582080 82896384 83119704 83220198 85613568 85844208 85947996 88613376 88720512 88959522 91582464 91829184 94839168 97898496 100382340 100436309 103620480 103728418 103899630 107016960 107074496 107305260 107362951 107434995 110528512 110766720 110826272 110900640 110960264 114151424 114339840 114458944 114478080 114597328 114786480 118151168 118294016 118548960 118612696 122373120 122438912 126452224 133843120 138160640 138532840 138700330 142689280 143073680 143246660 147688960 147867520 148265870 152637440 153048640 155592627 158065280 160611744 163164160 165792768 166239408 166440396 171227136 171688416 171895992 177226752 177441024 177919044 183658368 189678336 200764680 200872618 207240960 207456836 207799260 208050495 214033920 214148992 214610520 214725902 214869990 221057024 221533440 221652544 221801280 221920528 222398805 228917888 228956160 229194656 229572960 236302336 236588032 237097920 237225392 244746240 244877824 252904448 259321045 267686240 276321280 277065680 277400660 285378560 286147360 286493320 295377920 295735040 296531740 301308927 306097280 311185254 316130560 321223488 322088853 331585536 332478816 332880792 342454272 343376832 343791984 354453504 354882048 355838088 367316736 379356672 401529360 401745236 414481920 414913672 415598520 416100990 428067840 428297984 429221040 429451804 429739980 429971023 443066880 443305088 443602560 443841056 444797610 457835776 457912320 458389312 459145920 459624197 473176064 474195840 474450784 489492480 489755648 502181545 505808896 518642090 535372480 536814755 552642560 554131360 554801320 570757120 572294720 572986640 590755840 591470080 593063480 602617854 612194560 622370508 632261120 642446976 644177706 663171072 664957632 665761584 686753664 687583968 708907008 709764096 711676176 734633472 758713344 777963135 803058720 803490472 828963840 829827344 831197040 832201980 856135680 856595968 858442080 858903608 859479960 859942046 886133760 886610176 887205120 887682112 889595220 890073497 915671552 916778624 918291840 919248394 946352128 948391680 948901568 979511296 1004363090 1011617792 1037284180 1070744960 1073629510 1105285120 1108262720 1109602640 1144589440 1145973280 1181511680 1182940160 1186126960 1205235708 1224389120 1244741016 1264522240 1284893952 1288355412 1289913069 1329915264 1331523168 1373507328 1375167936 1378872591 1419528192 1423352352 1469266944 1506544635 1517426688 1555926270 1606117440 1606980944 1610444265 1657927680 1659654688 1662394080 1664403960 1712271360 1713191936 1716884160 1717807216 1718959920 1719884092 1772267520 1773220352 1774410240 1775364224 1779190440 1780146994 1831343104 1833557248 1836583680 1838496788 1896783360 1897803136 1959022592 2008726180 2074568360 2141489920 2147259020 2149855115 2216525440 2219205280 2289178880 2291946560 2298120985 2365880320 2372253920 2410471416 2448778240 2489482032 2529044480 2569787904 2576710824 2579826138 2659830528 2663046336 2670220491 2747014656 2750335872 2757745182 2839056384 2846704704 2938533888 3013089270 3034853376 3111852540 3113525579 3212234880 3213961888 3220888530 3315855360 3319309376 3324788160 3328251481 3328807920 3426383872 3433768320 3435614432 3437919840 3439768184 3544535040 3546440704 3548820480 3550728448 3558380880 3560293988 3662686208 3667114496 3673167360 3676993576 3793566720 3795606272 4017452360 4149136720 4282979840 4294518040 4299710230 4433050880 4438410560 4450367485 4578357760 4583893120 4596241970 4731760640 4744507840 4820942832 4897556480 4978964064 5058088960 5139575808 5153421648 5159652276 5319661056 5326092672 5340440982 5494029312 5500671744 5515490364 5693409408 5877067776 6026178540 6223705080 6227051158 6424469760 6427923776 6441777060 6449565345 6638618752 6649576320 6656502962 6657615840 6852767744 6867536640 6871228864 6875839680 6879536368 6894362955 7092881408 7097640960 7101456896 7116761760 7120587976 7325372416 7334228992 7346334720 7353987152 7587133440 7591212544 8034904720 8298273440 8565959680 8589036080 8599420460 8866101760 8876821120 8900734970 9156715520 9167786240 9192483940 9340576737 9489015680 9641885664 9795112960 9957928128 9984754443 10279151616 10306843296 10319304552 10639322112 10652185344 10680881964 10988058624 11001343488 11030980728 11386818816 12052357080 12447410160 12454102316 12848939520 12855847552 12883554120 12899130690 13277237504 13299152640 13313005924 13315231680 13329101713 13351102455 13735073280 13742457728 13751679360 13759072736 13788725910 14185762816 14195281920 14202913792 14233523520 14241175952 14668457984 14692669440 14707974304 15174266880 15182425088 15567627895 16069809440 16596546880 16641257405 17131919360 17178072160 17198840920 17732203520 17753642240 17801469940 18313431040 18335572480 18384967880 18681153474 18978031360 19283771328 19915856256 19969508886 20558303232 20613686592 20638609104 21278644224 21304370688 21361763928 21976117248 22002686976 22061961456 22773637632 24104714160 24894820320 24908204632 25697879040 25711695104 25767108240 25798261380 25812131413 26554475008 26598305280 26626011848 26630463360 26658203426 26702204910 27470146560 27484915456 27503358720 27518145472 27577451820 27592278407 28405827584 28467047040 28482351904 29336915968 29385338880 29415948608 30364850176 31135255790 32139618880 33193093760 33282514810 34263838720 34356144320 34397681840 35464407040 35507284480 35602939880 36626862080 36671144960 36769935760 37362306948 37956062720 38567542656 39831712512 39939017772 39987305139 41227373184 41277218208 42557288448 42608741376 42723527856 44005373952 44123922912 45547275264 46702883685 48209428320 49789640640 49816409264 49923772215 51395758080 51423390208 51534216480 51596522760 51624262826 53108950016 53196610560 53252023696 53260926720 53316406852 53404409820 54940293120 54969830912 55006717440 55036290944 55154903640 55184556814 56811655168 56934094080 56964703808 58831897216 60729700352 62270511580 64279237760 66386187520 66565029620 66645508565 68712288640 68795363680 70928814080 71014568960 71205879760 73342289920 73539871520 74724613896 75912125440 77135085312 77436394239 79663425024 79878035544 79974610278 82454746368 82554436416 82776835221 85217482752 85447055712 88010747904 88247845824 91094550528 93405767370 96418856640 96519292949 99579281280 99632818528 99847544430 102791516160 102846780416 103068432960 103193045520 103248525652 106217900032 106393221120 106504047392 106521853440 106632813704 106808819640 109880586240 109939661824 110013434880 110072581888 110309807280 110369113628 113868188160 113929407616 117663794432 124541023160 128558475520 129060657065 132772375040 133130059240 133291017130 137424577280 137590727360 137961392035 142029137920 142411759520 146684579840 147079743040 149449227792 151824250880 154270170624 154872788478 159326850048 159756071088 159949220556 164909492736 165108872832 165553670442 170434965504 170894111424 176495691648 182189101056 186811534740 192837713280 193038585898 199158562560 199265637056 199695088860 199936525695 205693560832 206136865920 206386091040 206497051304 212435800064 212786442240 213008094784 213043706880 213265627408 213617639280 219879323648 220026869760 220145163776 220619614560 220738227256 227736376320 227858815232 235327588864 249082046320 257116951040 258121314130 265544750080 266260118480 266582034260 274849154560 275181454720 275922784070 284058275840 284823519040 289557878847 294159486080 298898455584 303648501760 308540341248 309745576956 318653700096 319512142176 319898441112 329818985472 330217745664 331107340884 341788222848 352991383296 373623069480 385675426560 386077171796 387181971195 398317125120 398531274112 399390177720 399873051390 411387121664 412273731840 412772182080 412994102608 413884176105 426016189568 426087413760 426531254816 427235278560 439758647296 440053739520 440290327552 441239229120 441476454512 455472752640 455717630464 470655177728 482596464745 498164092640 514233902080 516242628260 531089500160 532520236960 533164068520 549698309120 550362909440 551845568140 569647038080 579115757694 588318972160 597796911168 617080682496 619491153912 637307400192 639024284352 639796882224 659637970944 660435491328 662214681768 683576445696 705982766592 747246138960 771350853120 772154343592 774363942390 796634250240 797062548224 798780355440 799746102780 800176073803 824547463680 825544364160 825988205216 827768352210 852032379136 852174827520 853062509632 854470557120 855360630617 880580655104 882478458240 882952909024 910945505280 911435260928 941310355456 965192929490 996328185280 1028467804160 1032485256520 1062179000320 1065040473920 1066328137040 1099396618240 1100725818880 1103691136280 1139294076160 1158231515388 1176637944320 1195593822336 1234161364992 1238982307824 1278048568704 1279593764448 1319275941888 1320870982656 1324429363536 1367152891392 1411965533184 1447789394235 1494492277920 1542701706240 1544308687184 1548727884780 1593268500480 1594125096448 1597560710880 1599492205560 1600352147606 1649094927360 1651088728320 1651976410432 1655536704420 1704064758272 1706125019264 1708941114240 1710721261234 1761161310208 1764956916480 1765905818048 1822870521856 1882620710912 1930385858980 1992656370560 2056935608320 2064970513040 2130080947840 2132656274080 2198793236480 2201451637760 2207382272560 2278588152320 2316463030776 2353275888640 2391187644672 2400528221409 2477964615648 2556097137408 2559187528896 2566081891851 2641741965312 2648858727072 2734305782784 2823931066368 2895578788470 2988984555840 3085403412480 3088617374368 3097455769560 3186537000960 3188250192896 3195121421760 3198984411120 3200704295212 3298189854720 3302177456640 3303952820864 3311073408840 3408129516544 3412250038528 3417882228480 3421442522468 3529913832960 3531811636096 3645741043712 3860771717960 3985312741120 4000880369015 4129941026080 4260161895680 4265312548160 4276803153085 4402903275520 4414764545120 4557176304640 4632926061552 4706551777280 4782375289344 4801056442818 4955929231296 5112194274816 5118375057792 5132163783702 5283483930624 5297717454144 5468611565568 5647862132736 5791157576940 5977969111680 6170806824960 6177234748736 6194911539120 6376500385792 6390242843520 6397968822240 6401408590424 6596379709440 6604354913280 6607905641728 6622146817680 6816259033088 6824500077056 6835764456960 6842885044936 7059827665920 7063623272192 7721543435920 7970625482240 8001760738030 8259882052160 8520323791360 8530625096320 8553606306170 8805806551040 8829529090240 9114352609280 9265852123104 9413103554560 9564750578688 9602112885636 9911858462592 10224388549632 10236750115584 10264327567404 10595434908288 10937223131136 11582315153880 11955938223360 12002641107045 12354469497472 12389823078240 12753000771584 12780485687040 12795937644480 12802817180848 12830409459255 13208709826560 13215811283456 13244293635360 13632518066176 13649000154112 13671528913920 13685770089872 14119655331840 14127246544384 15443086871840 15941250964480 16003521476060 16519764104320 17040647582720 17061250192640 17107212612340 17659058180480 18228705218560 18531704246208 19129501157376 19204225771272 19823716925184 20448777099264 20473500231168 20528655134808 21190869816576 23164630307760 23911876446720 24005282214090 24708938994944 24779646156480 24805458287893 25560971374080 25591875288960 25605634361696 25660818918510 26417419653120 26431622566912 26488587270720 27298000308224 27343057827840 27371540179744 28239310663680 28254493088768 30886173743680 31882501928960 32007042952120 33039528208640 34081295165440 34122500385280 34214425224680 35318116360960 37063408492416 38259002314752 38408451542544 39647433850368 40897554198528 40947000462336 41057310269616 42381739633152 46329260615520 47823752893440 48010564428180 49417877989888 49559292312960 49610916575786 51121942748160 51183750577920 51211268723392 51321637837020 52863245133824 52977174541440 54596000616448 54686115655680 54743080359488 56508986177536 61772347487360 63765003857920 64014085904240 66079056417280 68162590330880 68245000770560 68428850449360 70636232721920 74126816984832 74416374863679 76816903085088 79294867700736 81894000924672 82114620539232 84763479266304 92658521231040 95647505786880 96021128856360 98835755979776 99118584625920 99221833151572 102243885496320 102367501155840 102422537446784 102643275674040 105726490267648 105954349082880 109486160718976 113017972355072 123544694974720 124027291439465 128028171808480 132158112834560 136490001541120 136857700898720 141272465443840 148253633969664 148832749727358 153633806170176 158589735401472 163788001849344 164229241078464 169526958532608 185317042462080 191295011573760 192042257712720 197671511959552 198237169251840 198443666303144 204487770992640 204735002311680 204845074893568 205286551348080 211908698165760 218972321437952 247089389949440 248054582878930 256056343616960 264316225669120 272980003082240 273715401797440 282544930887680 296507267939328 297665499454716 307267612340352 317179470802944 328458482156928 339053917065216 370634084924160 372081874318395 384084515425440 395343023919104 396474338503680 396887332606288 409470004623360 409690149787136 410573102696160 423817396331520 437944642875904 494178779898880 496109165757860 512112687233920 528632451338240 547430803594880 565089861775360 593014535878656 595330998909432 614535224680704 656916964313856 741268169848320 744163748636790 768169030850880 792948677007360 793774665212576 818940009246720 819380299574272 821146205392320 847634792663040 875889285751808 988357559797760 992218331515720 1024225374467840 1094861607189760 1186029071757312 1190661997818864 1229070449361408 1313833928627712 1482536339696640 1488327497273580 1536338061701760 1585897354014720 1587549330425152 1638760599148544 1642292410784640 1695269585326080 1751778571503616 1976715119595520 1984436663031440 2048450748935680 2189723214379520 2381323995637728 2458140898722816 2627667857255424 2965072679393280 2976654994547160 3072676123403520 3175098660850304 3277521198297088 3284584821569280 3503557143007232 3968873326062880 4096901497871360 4379446428759040 4762647991275456 4916281797445632 5255335714510848 5930145358786560 5953309989094320 6145352246807040 6350197321700608 6569169643138560 7937746652125760 8193802995742720 8758892857518080 9525295982550912 9832563594891264 10510671429021696 11906619978188640 12290704493614080 12700394643401216 13138339286277120 15875493304251520 16387605991485440 17517785715036160 19050591965101824 23813239956377280 24581408987228160 25400789286802432 26276678572554240 31750986608503040 38101183930203648 47626479912754560 49162817974456320 50801578573604864 52553357145108480 63501973217006080 76202367860407296 95252959825509120 101603157147209728 127003946434012160 152404735720814592 190505919651018240 254007892868024320 304809471441629184 381011839302036480 508015785736048640 762023678604072960 1524047357208145920
- Sum of all divisors σ(n): 5235577009109915040
- Sum of proper divisors (its aliquot sum) s(n): 3711529651901769120
- 1524047357208145920 is an abundant number, because the sum of its proper divisors (3711529651901769120) is greater than itself. Its abundance is 2187482294693623200
Bases of 1524047357208145920
- Binary: 10101001001101000000011111111001000110100001110110000000000002
- Hexadecimal: 0x152680FF2343B000
- Base-36: BKUDP6E1222O
Squares and roots of 1524047357208145920
- 1524047357208145920 squared (15240473572081459202) is 2322720347013133927535991604012646400
- 1524047357208145920 cubed (15240473572081459203) is 3539935806398954370080025539899856646025052776562688000
-
The
square root of 1524047357208145920 is 1234523129.4747563051 -
The
cube root of 1524047357208145920 is 1150799.0306353261
Scales and comparisons
How big is 1524047357208145920?- 1,524,047,357,208,145,920 seconds is equal to 48,459,991,771 years, 11 weeks, 2 days, 21 hours, 52 minutes.
-
To count from 1 to 1,524,047,357,208,145,920 would take you about one hundred sixty-nine billion, six hundred nine million, nine hundred seventy-one thousand, one hundred ninety-nine years!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 1524047357208145920 cubic inches would be around 95899.9 feet tall.
Recreational maths with 1524047357208145920
- 1524047357208145920 backwards is 0295418027537404251
- The number of decimal digits it has is: 19
- The sum of 1524047357208145920's digits is 69
- More coming soon!
Link to this page
HTML: To link to this page, just copy and paste the link below into your blog, web page or email.
BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:
Cite this page
MLA style:
"Number 1524047357208145920 - Facts about the integer". Numbermatics.com. 2024. Web. 25 June 2024.
APA style:
Numbermatics. (2024). Number 1524047357208145920 - Facts about the integer. Retrieved 25 June 2024, from https://numbermatics.com/n/1524047357208145920/
Chicago style:
Numbermatics. 2024. "Number 1524047357208145920 - Facts about the integer". https://numbermatics.com/n/1524047357208145920/
The information we have on file for 1524047357208145920 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
Keywords: Divisors of 1524047357208145920, math, Factors of 1524047357208145920, curriculum, school, college, exams, university, Prime factorization of 1524047357208145920, STEM, science, technology, engineering, physics, economics, calculator, one quintillion, five hundred twenty-four quadrillion, forty-seven trillion, three hundred fifty-seven billion, two hundred eight million, one hundred forty-five thousand, nine hundred twenty.