943707101136800
943,707,101,136,800 is an even composite number composed of six prime numbers multiplied together.
What does the number 943707101136800 look like?
This visualization shows the relationship between its 6 prime factors (large circles) and 2160 divisors.
943707101136800 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two thousand, one hundred sixty divisors.
Prime factorization of 943707101136800:
25 × 52 × 7 × 114 × 135 × 31
(2 × 2 × 2 × 2 × 2 × 5 × 5 × 7 × 11 × 11 × 11 × 11 × 13 × 13 × 13 × 13 × 13 × 31)See below for interesting mathematical facts about the number 943707101136800 from the Numbermatics database.
Names of 943707101136800
- Cardinal: 943707101136800 can be written as Nine hundred forty-three trillion, seven hundred seven billion, one hundred one million, one hundred thirty-six thousand, eight hundred.
Scientific notation
- Scientific notation: 9.437071011368 × 1014
Factors of 943707101136800
Divisors of 943707101136800
- Number of divisors d(n): 2160
-
Complete list of divisors:
1 2 4 5 7 8 10 11 13 14 16 20 22 25 26 28 31 32 35 40 44 50 52 55 56 62 65 70 77 80 88 91 100 104 110 112 121 124 130 140 143 154 155 160 169 175 176 182 200 208 217 220 224 242 248 260 275 280 286 308 310 325 338 341 350 352 364 385 400 403 416 434 440 455 484 496 520 550 560 572 605 616 620 650 676 682 700 715 728 770 775 800 806 845 847 868 880 910 968 992 1001 1040 1085 1100 1120 1144 1183 1210 1232 1240 1300 1331 1352 1364 1400 1430 1456 1540 1550 1573 1612 1690 1694 1705 1736 1760 1820 1859 1925 1936 2002 2015 2080 2170 2197 2200 2275 2288 2366 2387 2420 2464 2480 2600 2662 2704 2728 2800 2821 2860 2912 3025 3080 3100 3146 3224 3380 3388 3410 3472 3575 3640 3718 3751 3850 3872 4004 4030 4225 4235 4340 4394 4400 4433 4550 4576 4732 4774 4840 4960 5005 5200 5239 5324 5408 5425 5456 5600 5642 5720 5915 6050 6160 6200 6292 6448 6655 6760 6776 6820 6944 7150 7280 7436 7502 7700 7865 8008 8060 8450 8470 8525 8680 8788 8800 8866 9100 9295 9317 9464 9548 9680 10010 10075 10400 10478 10648 10850 10912 10985 11011 11284 11440 11830 11935 12100 12320 12400 12584 12896 13013 13310 13520 13552 13640 14105 14300 14560 14641 14872 15004 15379 15400 15730 16016 16120 16900 16940 17050 17303 17360 17576 17732 18200 18590 18634 18755 18928 19096 19360 20020 20150 20449 20956 21175 21296 21700 21970 22022 22165 22568 22880 23660 23870 24167 24200 24800 25025 25168 26026 26195 26257 26620 27040 27104 27280 28210 28561 28600 29282 29575 29744 30008 30758 30800 31031 31460 32032 32240 33275 33800 33880 34100 34606 34720 35152 35464 36400 36673 37180 37268 37510 37856 38192 39325 40040 40300 40898 41261 41912 42350 42592 43400 43940 44044 44330 45136 46475 46585 47320 47740 48334 48400 48763 50050 50336 52052 52390 52514 53240 54560 54925 55055 56420 57122 57200 57629 58564 59150 59488 59675 60016 61516 61600 62062 62920 64480 65065 66550 67600 67760 68107 68200 69212 70304 70525 70928 72800 73205 73346 74360 74536 75020 76384 76895 78650 80080 80600 81796 82522 83824 84700 86515 86800 87880 88088 88660 90272 92950 93170 93775 94640 95480 96668 96800 97526 100100 102245 102487 104104 104780 105028 106480 109850 110110 110825 112840 114244 114400 115258 117128 118300 119350 120032 120835 121121 123032 124124 125840 130130 130975 131285 133100 135200 135520 136214 136400 138424 141050 141856 142805 143143 146410 146692 148720 149072 150040 153790 155155 157300 160160 161200 163592 165044 167648 169169 169400 173030 173600 175760 176176 177320 183365 185900 186340 187550 189280 190333 190960 193336 195052 199927 200200 204490 204974 206305 208208 209560 210056 212960 219700 220220 221650 224939 225680 228488 230516 232925 234256 236600 238700 241670 242242 243815 246064 248248 251680 260260 261950 262570 265837 266200 272428 272800 275275 276848 282100 285610 286286 288145 288827 292820 293384 297440 298144 300080 307580 310310 314171 314600 322400 325325 327184 330088 338338 338800 340535 341341 346060 351520 352352 354640 366025 366730 371293 371800 372680 375100 380666 381920 384475 386672 390104 399854 400400 403403 408980 409948 412610 416416 419120 420112 432575 439400 440440 443300 449878 451360 453871 456976 461032 465850 468512 473200 476749 477400 483340 484484 487630 492128 496496 511225 512435 520520 523900 525140 531674 532400 536393 544856 550550 553696 564200 571220 572572 576290 577654 585640 586768 600160 604175 605605 615160 620620 628342 629200 633919 650650 654368 656425 660176 676676 677600 681070 682682 692120 709280 714025 715715 732050 733460 742586 743600 745360 749177 750200 761332 768950 773344 775775 780208 799708 800800 806806 817960 819896 825220 838240 840224 845845 865150 878800 880880 885391 886600 899756 907742 913952 916825 922064 931700 946400 951665 953498 954800 966680 968968 975260 992992 999635 1022450 1024870 1031525 1041040 1047800 1050280 1063348 1064800 1072786 1089712 1101100 1124695 1128400 1142440 1145144 1152580 1155308 1171280 1173536 1208350 1211210 1219075 1230320 1241240 1256684 1258400 1267838 1301300 1312850 1320352 1329185 1332331 1353352 1362140 1365364 1384240 1428050 1431430 1440725 1444135 1464100 1466920 1485172 1487200 1490720 1498354 1500400 1522664 1537900 1551550 1560416 1570855 1574573 1599416 1613612 1635920 1639792 1650440 1691690 1702675 1706705 1730300 1757600 1761760 1770782 1773200 1799512 1815484 1833650 1844128 1856465 1860859 1863400 1903330 1906996 1909600 1933360 1937936 1950520 1999270 2017015 2044900 2049740 2063050 2082080 2095600 2100560 2126696 2145572 2179424 2199197 2202200 2249390 2256800 2269355 2284880 2290288 2305160 2310616 2342560 2383745 2416700 2422420 2438150 2460640 2474329 2482480 2513368 2535676 2562175 2599051 2602600 2625700 2658370 2664662 2681965 2706704 2724280 2730728 2768480 2856100 2862860 2881450 2888270 2924207 2928200 2933840 2970344 2996708 3000800 3028025 3045328 3075800 3103100 3141710 3149146 3169595 3177097 3198832 3227224 3271840 3279584 3300880 3383380 3405350 3413410 3455881 3460600 3541564 3546400 3578575 3599024 3630968 3667300 3712930 3721718 3726800 3745885 3754751 3806660 3813992 3866720 3875872 3901040 3998540 4034030 4084223 4089800 4099480 4126100 4191200 4201120 4229225 4253392 4291144 4398394 4404400 4426955 4437433 4498780 4538710 4569760 4580576 4610320 4621232 4758325 4767490 4833400 4844840 4876300 4948658 4964960 4998175 5026736 5071352 5124350 5198102 5205200 5244239 5251400 5316740 5329324 5363930 5413408 5448560 5461456 5623475 5712200 5725720 5762900 5776540 5848414 5856400 5867680 5900323 5940688 5993416 6056050 6090656 6151600 6197737 6206200 6283420 6298292 6339190 6354194 6397664 6454448 6601760 6645925 6661655 6766760 6810700 6826820 6911762 6921200 6973109 7083128 7157150 7198048 7220675 7261936 7334600 7425860 7443436 7453600 7491770 7509502 7613320 7627984 7802080 7854275 7872865 7997080 8068060 8168446 8179600 8198960 8240947 8252200 8458450 8506784 8533525 8582288 8796788 8808800 8853910 8874866 8997560 9077420 9220640 9242464 9282325 9304295 9516650 9534980 9666800 9689680 9739301 9752600 9897316 9996350 10053472 10085075 10142704 10248700 10396204 10410400 10488478 10502800 10633480 10658648 10727860 10897120 10922912 10995985 11246950 11346775 11424400 11451440 11510083 11525800 11553080 11696828 11712800 11800646 11881376 11918725 11986832 12112100 12303200 12371645 12395474 12412400 12566840 12596584 12678380 12708388 12908896 12995255 13291850 13323310 13409825 13533520 13621400 13653640 13823524 13842400 13946218 14166256 14314300 14441350 14523872 14621035 14669200 14851720 14886872 14983540 15019004 15226640 15255968 15708550 15745730 15847975 15885485 15994160 16136120 16336892 16359200 16397920 16481894 16504400 16916900 17067050 17164576 17279405 17320303 17593576 17707820 17749732 17995120 18154840 18564650 18608590 18729425 18773755 19033300 19069960 19333600 19379360 19478602 19505200 19794632 19992700 20170150 20285408 20421115 20469449 20497400 20792408 20976956 21005600 21266960 21317296 21455720 21991970 22134775 22187165 22493900 22693550 22848800 22902880 23020166 23051600 23106160 23393656 23601292 23837450 23973664 24191167 24224200 24743290 24790948 24824800 25133680 25193168 25356760 25416776 25990510 26221195 26583700 26646620 26819650 27067040 27242800 27307280 27647048 27892436 28332512 28589561 28628600 28882700 29242070 29338400 29501615 29703440 29773744 29967080 30038008 30453280 30988685 31417100 31491460 31695950 31770970 31988320 32166277 32272240 32673784 32963788 33008800 33308275 33833800 34134100 34558810 34640606 34865545 35187152 35415640 35499464 35990240 36309680 37129300 37217180 37458850 37547510 38014691 38066600 38139920 38957204 39010400 39364325 39589264 39985400 40340300 40842230 40938898 40994800 41204735 41302261 41584816 41953912 42533920 42634592 42911440 43983940 44269550 44374330 44926453 44987800 45387100 46040332 46103200 46212320 46521475 46787312 47202584 47674900 48382334 48448400 48696505 48811763 49486580 49581896 50267360 50386336 50713520 50833552 51981020 52442390 53167400 53293240 53639300 54485600 54614560 54979925 55294096 55784872 57179122 57257200 57550415 57686629 57765400 58484140 59003230 59406880 59547488 59934160 60076016 61858225 61977370 62834200 62982920 63391900 63541940 64332554 64544480 64976275 65347568 65927576 66616550 67667600 68175107 68268200 69117620 69281212 69731090 70374304 70831280 70998928 72619360 73105175 74258600 74434360 74917700 75095020 76029382 76133200 76279840 76704199 77914408 78728650 79178528 79427425 79970800 80570581 80680600 81684460 81877796 81989600 82409470 82604522 83169632 83907824 85822880 86397025 86601515 87967880 88539100 88748660 89852906 89975600 90650417 90774200 92080664 93042950 93574624 93868775 94405168 95349800 96764668 96896800 97393010 97623526 98973160 99163792 101427040 101667104 102105575 102347245 103962040 104884780 106334800 106586480 107132311 107278600 109959850 110588192 110935825 111569744 114358244 114514400 115100830 115373258 115530800 116968280 118006460 119868320 120152032 120955835 123716450 123954740 125668400 125965840 126610913 126783800 127083880 128665108 129952550 130695136 131105975 131855152 133233100 135335200 136350214 136536400 138235240 138562424 139462180 141662560 141997856 142947805 146210350 147508075 148517200 148868720 149835400 150190040 152058764 152266400 153408398 154943425 155828816 157457300 158854850 159941600 160831385 161141162 161361200 163368920 163755592 164818940 165209044 167815648 172794050 173203030 174327725 175935760 177078200 177497320 179705812 179951200 181300834 181548400 184161328 186085900 187737550 188810336 190073455 190699600 193529336 194786020 195247052 197946320 198327584 204211150 204694490 206023675 206511305 207924080 209769560 212669600 213172960 214264622 214557200 219919700 221871650 223139488 224632265 225163939 228716488 230201660 230746516 231061600 233936560 236012920 241911670 243482525 244058815 247432900 247909480 251336800 251931680 253221826 253567600 254167760 257330216 259905100 262211950 263710304 266102837 266466200 272700428 273072800 276470480 277124848 278924360 285895610 287752075 288433145 292420700 295016150 297034400 297737440 299670800 300380080 304117528 306816796 309886850 311657632 314485171 314914600 317709700 321662770 322282324 322722400 326737840 327511184 329637880 330418088 340875535 345588100 346406060 348655450 351871520 354156400 354994640 359411624 362601668 363096800 368322656 372171800 375475100 380146910 381399200 383520995 387058672 389572040 390494104 395892640 402852905 408422300 409388980 412047350 413022610 415848160 418161601 419539120 428529244 429114400 433007575 439839400 443743300 449264530 450327878 453252085 457432976 460403320 461493032 467873120 472025840 483823340 486965050 488117630 494190983 494865800 495818960 506443652 507135200 508335520 511736225 514660432 519810200 524423900 532205674 532932400 535661555 536929393 545400856 552940960 554249696 557848720 571791220 575504150 576866290 584841400 590032300 599341600 600760160 604779175 608235056 613633592 619773700 628970342 629829200 633054565 634552919 635419400 643325540 644564648 653475680 655022368 659275760 660836176 681751070 691176200 692812120 697310900 708312800 709989280 714739025 718823248 725203336 744343600 749926177 750950200 760293820 767041990 774117344 779144080 780988208 804156925 805705810 816844600 818777960 824094700 826045220 836323202 839078240 857058488 866015150 879678800 886276391 887486600 898529060 900655756 906504170 914865952 920806640 922986064 944051680 950367275 967646680 973930100 976235260 988381966 989731600 991637920 997154587 1012887304 1023472450 1029320864 1032556525 1039620400 1048847800 1064411348 1065864800 1071323110 1073858786 1090801712 1115697440 1123161325 1125819695 1143582440 1151008300 1153732580 1169682800 1178455421 1180064600 1209558350 1216470112 1220294075 1227267184 1239547400 1257940684 1259658400 1266109130 1269105838 1270838800 1286651080 1289129296 1318551520 1321672352 1330514185 1363502140 1382352400 1385624240 1392720043 1394621800 1429478050 1437646496 1442165725 1450406672 1488687200 1499852354 1501900400 1520587640 1534083980 1558288160 1561976416 1572425855 1608313850 1611411620 1633689200 1637555920 1648189400 1652090440 1672646404 1704377675 1714116976 1732030300 1759357600 1772552782 1774973200 1797058120 1801311512 1813008340 1841613280 1845972128 1900734550 1917604975 1935293360 1947860200 1952470520 1976763932 1979463200 1994309174 2014264525 2025774608 2046944900 2065113050 2079240800 2090808005 2097695600 2128822696 2142646220 2147717572 2181603424 2246322650 2251639390 2266260425 2287164880 2302016600 2307465160 2339365600 2356910842 2360129200 2419116700 2440588150 2454534368 2470954915 2479094800 2515881368 2532218260 2538211676 2541677600 2573302160 2578258592 2661028370 2678307775 2684646965 2727004280 2764704800 2771248480 2785440086 2789243600 2858956100 2884331450 2900813344 2927131207 2999704708 3003800800 3041175280 3068167960 3144851710 3165272825 3172764595 3216627700 3222823240 3267378400 3275111840 3296378800 3304180880 3345292808 3408755350 3428233952 3459336881 3464060600 3545105564 3549946400 3594116240 3602623024 3626016680 3749630885 3801469100 3835209950 3870586720 3895720400 3904941040 3953527864 3988618348 4028529050 4051549216 4093889800 4130226100 4181616010 4195391200 4257645392 4285292440 4295435144 4431381955 4492645300 4503278780 4532520850 4574329760 4604033200 4614930320 4713821684 4720258400 4838233400 4881176300 4941909830 4958189600 4985772935 5031762736 5064436520 5076423352 5146604320 5322056740 5356615550 5369293930 5436100813 5454008560 5570880172 5578487200 5629098475 5717912200 5768662900 5854262414 5892277105 5999409416 6082350560 6136335920 6289703420 6330545650 6345529190 6433255400 6445646480 6592757600 6608361760 6652570925 6690585616 6817510700 6918673762 6928121200 6963600215 6980082109 7090211128 7188232480 7205246048 7252033360 7499261770 7602938200 7670419900 7791440800 7809882080 7862129275 7907055728 7977236696 8057058100 8187779600 8249187947 8260452200 8363232020 8515290784 8570584880 8590870288 8862763910 8985290600 9006557560 9065041700 9208066400 9229860640 9427643368 9676466800 9749040301 9762352600 9883819660 9971545870 10063525472 10128873040 10152846704 10454040025 10644113480 10713231100 10738587860 10872201626 10908017120 11141760344 11258196950 11435824400 11537325800 11708524828 11784554210 11998818832 12272671840 12354774575 12579406840 12661091300 12691058380 12866510800 12891292960 12963009631 13305141850 13381171232 13423234825 13635021400 13837347524 13856242400 13927200430 13960164218 14180422256 14504066720 14635656035 14998523540 15205876400 15319920473 15340839800 15724258550 15814111456 15863822975 15954473392 16114116200 16375559200 16498375894 16520904400 16726464040 17141169760 17181740576 17296684405 17725527820 17970581200 18013115120 18130083400 18748154425 18855286736 19352933600 19498080602 19524705200 19767639320 19943091740 20257746080 20305693408 20908080050 21288226960 21426462200 21477175720 21744403252 22156909775 22283520688 22516393900 22871648800 23074651600 23417049656 23569108420 23997637664 24709549150 24928864675 25158813680 25322182600 25382116760 25733021600 25926019262 26610283700 26846469650 27180504065 27270042800 27674695048 27854400860 27920328436 28360844512 29271312070 29461385525 29997047080 30411752800 30639840946 30681679600 31448517100 31727645950 31908946784 32228232400 32996751788 33041808800 33452928080 34593368810 34818001075 34900410545 35451055640 35941162400 36026230240 36260166800 37496308850 37710573472 38052705691 38996161204 39049410400 39535278640 39886183480 41245939735 41816160100 42576453920 42852924400 42954351440 43488806504 44313819550 44567041376 45032787800 46149303200 46834099312 47138216840 48745201505 49419098300 49857729350 50317627360 50644365200 50764233520 51852038524 53220567400 53692939300 54361008130 54540085600 55349390096 55708801720 55840656872 58542624140 58922771050 59994094160 61279681892 61363359200 62897034200 63455291900 64456464800 64815048155 65993503576 66905856160 69186737620 69636002150 69800821090 70902111280 72520333600 73178280175 74992617700 76105411382 76599602365 77992322408 79070557280 79772366960 82491879470 83632320200 85705848800 85908702880 86483422025 86977613008 88627639100 90065575600 90741067417 93668198624 94276433680 97490403010 98838196600 99715458700 101288730400 101528467040 103704077048 106441134800 107239443311 107385878600 108722016260 110698780192 111417603440 111681313744 117085248280 117845542100 119988188320 122559363784 125794068400 126910583800 129630096310 131987007152 135902520325 138373475240 139272004300 139601642180 141804222560 146356560350 149985235400 152210822764 153199204730 155984644816 159544733920 164983758940 167264640400 168519125203 172966844050 173955226016 174502052725 177255278200 180131151200 181482134834 188552867360 190263528455 194980806020 197676393200 199430917400 206229698675 207408154096 212882269600 214478886622 214771757200 217444032520 222835206880 223362627488 234170496560 235691084200 243726007525 245118727568 251588136800 253821167600 259260192620 263974014304 271805040650 276746950480 278544008600 279203284360 292713120700 299970470800 304421645528 306398409460 311969289632 324075240775 329967517880 334529280800 337038250406 345933688100 349004105450 354510556400 362964269668 380527056910 382998011825 389961612040 395352786400 398861834800 412459397350 414816308192 428957773244 429543514400 434888065040 453705337085 468340993120 471382168400 487452015050 490237455136 507642335200 518520385240 536197216555 543610081300 553493900960 557088017200 558406568720 585426241400 599940941600 608843291056 612796818920 648150481550 659935035760 674076500812 691867376200 698008210900 709021112800 725928539336 761054113820 765996023650 779923224080 797723669600 824918794700 842595626015 857915546488 869776130080 907410674170 942764336800 951317642275 974904030100 1037040770480 1072394433110 1087220162600 1114176034400 1116813137440 1170852482800 1179633876421 1217686582112 1225593637840 1296300963100 1319870071520 1348153001624 1383734752400 1396016421800 1451857078672 1522108227640 1531992047300 1559846448160 1649837589400 1685191252030 1715831092976 1814821348340 1902635284550 1949808060200 2074081540960 2144788866220 2174440325200 2268526685425 2341704965600 2359267752842 2451187275680 2592601926200 2680986082775 2696306003248 2767469504800 2792032843600 2903714157344 3044216455280 3063984094600 3299675178800 3370382504060 3431662185952 3629642696680 3805270569100 3899616120400 4212978130075 4289577732440 4348880650400 4537053370850 4718535505684 5185203852400 5361972165550 5392612006496 5584065687200 5898169382105 6088432910560 6127968189200 6599350357600 6740765008120 7259285393360 7610541138200 7799232240800 8425956260150 8579155464880 9074106741700 9437071011368 10370407704800 10723944331100 11796338764210 12255936378400 13481530016240 14518570786720 15221082276400 16851912520300 17158310929760 18148213483400 18874142022736 21447888662200 23592677528420 26963060032480 29490846910525 30442164552800 33703825040600 36296426966800 37748284045472 42895777324400 47185355056840 58981693821050 67407650081200 72592853933600 85791554648800 94370710113680 117963387642100 134815300162400 188741420227360 235926775284200 471853550568400 943707101136800
- Sum of all divisors σ(n): 3238781989685760
- Sum of proper divisors (its aliquot sum) s(n): 2295074888548960
- 943707101136800 is an abundant number, because the sum of its proper divisors (2295074888548960) is greater than itself. Its abundance is 1351367787412160
Bases of 943707101136800
- Binary: 110101101001001011111011101000100100000111101000002
- Hexadecimal: 0x35A4BEE8907A0
- Base-36: 9AIL227Z4W
Squares and roots of 943707101136800
- 943707101136800 squared (9437071011368002) is 890583092736022463852314240000
- 943707101136800 cubed (9437071011368003) is 840449588767357684719232636626414828032000000
-
The
square root of 943707101136800 is 30719816.0986813201 -
The
cube root of 943707101136800 is 98087.2158867755
Scales and comparisons
How big is 943707101136800?- 943,707,101,136,800 seconds is equal to 30,006,966 years, 38 weeks, 2 days, 18 hours, 53 minutes, 20 seconds.
-
To count from 1 to 943,707,101,136,800 would take you about seventy-five million, seventeen thousand, four hundred sixteen 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 943707101136800 cubic inches would be around 8173.9 feet tall.
Recreational maths with 943707101136800
- 943707101136800 backwards is 008631101707349
- 943707101136800 is a
Harshad number . - The number of decimal digits it has is: 15
- The sum of 943707101136800's digits is 50
- 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 943707101136800 - Facts about the integer". Numbermatics.com. 2024. Web. 22 June 2024.
APA style:
Numbermatics. (2024). Number 943707101136800 - Facts about the integer. Retrieved 22 June 2024, from https://numbermatics.com/n/943707101136800/
Chicago style:
Numbermatics. 2024. "Number 943707101136800 - Facts about the integer". https://numbermatics.com/n/943707101136800/
The information we have on file for 943707101136800 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 943707101136800, math, Factors of 943707101136800, curriculum, school, college, exams, university, Prime factorization of 943707101136800, STEM, science, technology, engineering, physics, economics, calculator, nine hundred forty-three trillion, seven hundred seven billion, one hundred one million, one hundred thirty-six thousand, eight hundred.