950386107225600
950,386,107,225,600 is an even composite number composed of five prime numbers multiplied together.
What does the number 950386107225600 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 2160 divisors.
950386107225600 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two thousand, one hundred sixty divisors.
Prime factorization of 950386107225600:
29 × 38 × 52 × 473 × 109
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 5 × 47 × 47 × 47 × 109)See below for interesting mathematical facts about the number 950386107225600 from the Numbermatics database.
Names of 950386107225600
- Cardinal: 950386107225600 can be written as Nine hundred fifty trillion, three hundred eighty-six billion, one hundred seven million, two hundred twenty-five thousand, six hundred.
Scientific notation
- Scientific notation: 9.503861072256 × 1014
Factors of 950386107225600
Divisors of 950386107225600
- Number of divisors d(n): 2160
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 32 36 40 45 47 48 50 54 60 64 72 75 80 81 90 94 96 100 108 109 120 128 135 141 144 150 160 162 180 188 192 200 216 218 225 235 240 243 256 270 282 288 300 320 324 327 360 376 384 400 405 423 432 436 450 470 480 486 512 540 545 564 576 600 640 648 654 675 705 720 729 752 768 800 810 846 864 872 900 940 960 972 981 1080 1090 1128 1152 1175 1200 1215 1269 1280 1296 1308 1350 1410 1440 1458 1504 1536 1600 1620 1635 1692 1728 1744 1800 1880 1920 1944 1962 2025 2115 2160 2180 2187 2209 2256 2304 2350 2400 2430 2538 2560 2592 2616 2700 2725 2820 2880 2916 2943 3008 3200 3240 3270 3384 3456 3488 3525 3600 3645 3760 3807 3840 3888 3924 4050 4230 4320 4360 4374 4418 4512 4608 4700 4800 4860 4905 5076 5123 5184 5232 5400 5450 5640 5760 5832 5886 6016 6075 6345 6400 6480 6540 6561 6627 6768 6912 6976 7050 7200 7290 7520 7614 7680 7776 7848 8100 8175 8460 8640 8720 8748 8829 8836 9024 9400 9600 9720 9810 10152 10246 10368 10464 10575 10800 10900 10935 11045 11280 11421 11520 11664 11772 12032 12150 12690 12800 12960 13080 13122 13254 13536 13824 13952 14100 14400 14580 14715 15040 15228 15369 15552 15696 16200 16350 16920 17280 17440 17496 17658 17672 18048 18225 18800 19035 19200 19440 19620 19881 20304 20492 20736 20928 21150 21600 21800 21870 22090 22560 22842 23040 23328 23544 24064 24300 24525 25380 25615 25920 26160 26244 26487 26508 27072 27904 28200 28800 29160 29430 30080 30456 30738 31104 31392 31725 32400 32700 32805 33135 33840 34263 34560 34880 34992 35316 35344 36096 36450 37600 38070 38400 38880 39240 39762 40608 40984 41472 41856 42300 43200 43600 43740 44145 44180 45120 45684 46107 46656 47088 48600 49050 50760 51230 51840 52320 52488 52974 53016 54144 54675 55225 55808 56400 57105 57600 58320 58860 59643 60160 60912 61476 62208 62784 63450 64800 65400 65610 66270 67680 68526 69120 69760 69984 70632 70688 72192 72900 73575 75200 76140 76845 77760 78480 79461 79524 81216 81968 83712 84600 86400 87200 87480 88290 88360 90240 91368 92214 93312 94176 95175 97200 98100 99405 101520 102460 102789 103680 103823 104640 104976 105948 106032 108288 109350 110450 112800 114210 115200 116640 117720 119286 120320 121824 122952 124416 125568 126900 128075 129600 130800 131220 132435 132540 135360 137052 138321 139520 139968 141264 141376 145800 147150 150400 152280 153690 155520 156960 158922 159048 162432 163936 164025 165675 167424 169200 171315 172800 174400 174960 176580 176720 178929 180480 182736 184428 186624 188352 190350 194400 196200 198810 203040 204920 205578 207360 207646 209280 209952 211896 212064 216576 218700 220725 220900 225600 228420 230535 233280 235440 238383 238572 240781 243648 245904 251136 253800 256150 259200 261600 262440 264870 265080 270720 274104 276642 279040 279936 282528 282752 285525 291600 294300 298215 300800 304560 307380 308367 311040 311469 313920 317844 318096 324864 327872 328050 331350 338400 342630 345600 348800 349920 353160 353440 357858 360960 365472 368856 373248 376704 380700 384225 388800 392400 397305 397620 406080 409840 411156 414963 415292 418560 419904 423792 424128 437400 441450 441800 451200 456840 461070 466560 470880 476766 477144 481562 487296 491808 497025 502272 507600 512300 513945 518400 519115 523200 524880 529740 530160 536787 541440 548208 553284 559872 565056 565504 571050 583200 588600 596430 601600 609120 614760 616734 622080 622938 627840 635688 636192 649728 655744 656100 662175 662700 676800 685260 691605 697600 699840 706320 706880 715149 715716 722343 730944 737712 753408 761400 768450 777600 784800 794610 795240 812160 819680 822312 829926 830584 837120 839808 847584 848256 856575 874800 882900 883600 894645 902400 913680 922140 933120 934407 941760 953532 954288 963124 974592 983616 994050 1015200 1024600 1027890 1036800 1038230 1046400 1049760 1059480 1060320 1073574 1082880 1096416 1106568 1119744 1130112 1131008 1142100 1152675 1166400 1177200 1191915 1192860 1203905 1218240 1229520 1233468 1244889 1245876 1255680 1271376 1272384 1311488 1312200 1324350 1325400 1353600 1370520 1383210 1395200 1399680 1412640 1413760 1430298 1431432 1444686 1461888 1475424 1491075 1506816 1522800 1536900 1541835 1555200 1557345 1569600 1589220 1590480 1610361 1624320 1639360 1644624 1659852 1661168 1679616 1695168 1696512 1713150 1749600 1765800 1767200 1789290 1804800 1827360 1844280 1866240 1868814 1883520 1907064 1908576 1926248 1949184 1967232 1986525 1988100 2030400 2049200 2055780 2074815 2076460 2092800 2099520 2118960 2120640 2147148 2167029 2192832 2213136 2260224 2284200 2305350 2332800 2354400 2383830 2385720 2407810 2436480 2459040 2466936 2489778 2491752 2511360 2542752 2544768 2569725 2595575 2622976 2624400 2648700 2650800 2683935 2707200 2741040 2766420 2799360 2803221 2825280 2827520 2860596 2862864 2889372 2923776 2950848 2982150 3045600 3073800 3083670 3110400 3114690 3139200 3178440 3180960 3220722 3248640 3278720 3289248 3319704 3322336 3359232 3390336 3393024 3426300 3458025 3499200 3531600 3534400 3575745 3578580 3611715 3654720 3688560 3734667 3737628 3767040 3814128 3817152 3852496 3934464 3973050 3976200 4060800 4098400 4111560 4149630 4152920 4185600 4199040 4237920 4241280 4294296 4334058 4385664 4426272 4473225 4520448 4568400 4610700 4665600 4672035 4708800 4767660 4771440 4815620 4831083 4872960 4918080 4933872 4979556 4983504 5085504 5089536 5139450 5191150 5248800 5297400 5301600 5367870 5414400 5482080 5532840 5598720 5606442 5650560 5655040 5721192 5725728 5778744 5847552 5901696 5959575 5964300 6019525 6091200 6147600 6167340 6224445 6229380 6278400 6356880 6361920 6441444 6501087 6557440 6578496 6639408 6644672 6780672 6852600 6916050 6998400 7063200 7068800 7151490 7157160 7223430 7309440 7377120 7469334 7475256 7534080 7628256 7634304 7704992 7709175 7786725 7868928 7946100 7952400 8051805 8121600 8196800 8223120 8299260 8305840 8398080 8409663 8475840 8482560 8588592 8668116 8771328 8852544 8946450 9136800 9221400 9331200 9344070 9417600 9535320 9542880 9631240 9662166 9745920 9836160 9867744 9959112 9967008 10171008 10179072 10278900 10374075 10382300 10497600 10594800 10603200 10735740 10835145 10964160 11065680 11204001 11212884 11301120 11316707 11442384 11451456 11557488 11803392 11919150 11928600 12039050 12182400 12295200 12334680 12448890 12458760 12556800 12713760 12723840 12882888 13002174 13114880 13156992 13278816 13289344 13419675 13561344 13705200 13832100 13996800 14016105 14126400 14137600 14302980 14314320 14446860 14493249 14618880 14754240 14938668 14950512 15256512 15268608 15409984 15418350 15573450 15892200 15904800 16103610 16243200 16393600 16446240 16598520 16611680 16796160 16819326 16951680 16965120 17177184 17336232 17542656 17705088 17878725 17892900 18058575 18273600 18442800 18673335 18688140 18835200 19070640 19085760 19262480 19324332 19503261 19672320 19735488 19918224 19934016 20342016 20557800 20748150 20764600 20995200 21189600 21206400 21471480 21670290 21928320 22131360 22408002 22425768 22602240 22633414 22884768 22902912 23114976 23360175 23606784 23838300 23857200 24078100 24155415 24364800 24590400 24669360 24897780 24917520 25228989 25427520 25447680 25765776 26004348 26313984 26557632 26578688 26839350 27410400 27664200 27993600 28032210 28252800 28275200 28605960 28628640 28893720 28986498 29237760 29508480 29877336 29901024 30513024 30537216 30819968 30836700 31122225 31146900 31784400 31809600 32207220 32505435 32787200 32892480 33197040 33223360 33612003 33638652 33903360 33950121 34354368 34672464 35410176 35757450 35785800 36117150 36547200 36885600 37346670 37376280 37670400 38141280 38171520 38524960 38648664 39006522 39344640 39470976 39836448 39868032 40259025 40684032 41115600 41496300 41529200 41990400 42048315 42379200 42412800 42942960 43340580 43856640 44262720 44816004 44851536 45266828 45769536 45805824 46229952 46720350 47676600 47714400 48156200 48310830 48729600 49180800 49338720 49795560 49835040 50457978 50855040 50895360 51531552 52008696 52627968 53115264 53157376 53678700 54175725 54820800 55328400 56020005 56064420 56505600 56583535 57211920 57257280 57787440 57972996 58509783 59016960 59754672 59802048 61026048 61639936 61673400 62244450 62293800 63568800 63619200 64414440 65010870 65574400 65784960 66394080 66446720 67224006 67277304 67806720 67900242 68708736 69344928 70080525 70820352 71514900 71571600 72234300 72466245 73094400 73771200 74693340 74752560 75686967 76282560 76343040 77049920 77297328 78013044 78941952 79672896 79736064 80518050 82231200 82992600 83058400 83980800 84096630 84758400 84825600 85885920 86681160 87713280 88525440 89632008 89703072 90533656 91539072 91611648 92459904 93366675 93440700 95353200 95428800 96312400 96621660 97516305 98361600 98677440 99591120 99670080 100915956 101710080 101850363 103063104 104017392 106230528 107357400 108351450 109641600 110656800 112040010 112128840 113011200 113167070 114423840 114514560 115574880 115945992 117019566 118033920 119509344 119604096 120777075 122052096 123279872 123346800 124488900 124587600 126144945 127137600 127238400 128828880 130021740 131569920 132788160 132893440 134448012 134554608 135800484 137417472 138689856 140161050 143029800 143143200 144468600 144932490 146188800 147542400 149386680 149505120 151373934 152565120 152686080 154099840 154594656 156026088 157883904 159345792 159472128 161036100 162527175 164462400 165985200 166116800 168060015 168193260 169516800 169750605 171771840 173362320 175529349 177050880 179264016 179406144 181067312 183078144 184919808 186733350 186881400 190706400 190857600 192624800 193243320 195032610 196723200 197354880 199182240 199340160 201831912 203420160 203700726 206126208 208034784 210241575 212461056 214714800 216702900 219283200 221313600 224080020 224257680 226334140 227060901 228847680 229029120 231149760 231891984 234039132 239018688 239208192 241554150 246693600 248977800 249175200 252289890 254275200 254476800 257657760 260043480 263139840 265576320 265786880 268896024 269109216 271600968 274834944 277379712 280100025 280322100 282917675 286059600 286286400 288937200 289864980 292548915 295084800 298773360 299010240 302747868 305130240 305551089 308199680 309189312 312052176 318691584 322072200 325054350 328924800 331970400 332233600 336120030 336386520 339033600 339501210 343543680 346724640 351058698 354101760 358528032 358812288 362134624 362331225 366156288 369839616 373466700 373762800 378434835 381412800 381715200 385249600 386486640 390065220 394709760 398364480 398680320 403663824 407401452 412252416 416069568 420483150 429429600 433405800 438566400 442627200 448160040 448515360 452668280 454121802 457695360 458058240 462299520 463783968 468078264 478037376 478416384 483108300 487581525 493387200 497955600 498350400 504579780 508550400 509251815 515315520 520086960 526588047 531152640 537792048 538218432 543201936 554759424 560200050 560644200 565835350 572119200 572572800 577874400 579729960 585097830 590169600 597546720 598020480 605495736 610260480 611102178 616399360 618378624 624104352 630724725 637383168 644144400 650108700 657849600 663940800 664467200 672240060 672773040 679002420 681182703 687087360 693449280 702117396 717056064 717624576 724269248 724662450 746933400 747525600 756869670 762825600 763430400 770499200 772973280 780130440 789419520 796728960 797360640 807327648 814802904 824504832 832139136 840300075 840966300 848753025 858859200 866811600 877646745 885254400 896320080 897030720 905336560 908243604 915390720 916653267 924599040 927567936 936156528 956074752 966216600 975163050 986774400 995911200 996700800 1009159560 1017100800 1018503630 1030631040 1040173920 1053176094 1062305280 1075584096 1076436864 1086403872 1109518848 1120400100 1121288400 1131670700 1135304505 1144238400 1145145600 1155748800 1159459920 1170195660 1195093440 1196040960 1210991472 1222204356 1236757248 1248208704 1261449450 1288288800 1300217400 1315699200 1327881600 1328934400 1344480120 1345546080 1358004840 1362365406 1374174720 1386898560 1404234792 1434112128 1435249152 1448538496 1449324900 1462744575 1493866800 1495051200 1513739340 1525651200 1527755445 1540998400 1545946560 1560260880 1579764141 1593457920 1614655296 1629605808 1664278272 1680600150 1681932600 1697506050 1717718400 1733623200 1755293490 1770508800 1792640160 1794061440 1810673120 1816487208 1830781440 1833306534 1849198080 1855135872 1872313056 1892174175 1912149504 1932433200 1950326100 1973548800 1991822400 1993401600 2018319120 2037007260 2061262080 2080347840 2106352188 2151168192 2152873728 2172807744 2240800200 2242576800 2263341400 2270609010 2288476800 2290291200 2311497600 2318919840 2340391320 2390186880 2392081920 2421982944 2444408712 2473514496 2496417408 2522898900 2546259075 2576577600 2600434800 2632940235 2655763200 2688960240 2691092160 2716009680 2724730812 2749959801 2773797120 2808469584 2868224256 2897076992 2898649800 2925489150 2987733600 2990102400 3027478680 3051302400 3055510890 3081996800 3091893120 3120521760 3159528282 3186915840 3229310592 3259211616 3328556544 3361200300 3363865200 3395012100 3405913515 3435436800 3467246400 3510586980 3585280320 3588122880 3621346240 3632974416 3666613068 3710271744 3744626112 3784348350 3864866400 3900652200 3947097600 3983644800 3986803200 4036638240 4074014520 4122524160 4160695680 4212704376 4302336384 4305747456 4345615488 4388233725 4481600400 4485153600 4526682800 4541218020 4576953600 4583266335 4622995200 4637839680 4680782640 4780373760 4843965888 4888817424 4992834816 5045797800 5092518150 5153155200 5200869600 5265880470 5311526400 5377920480 5382184320 5432019360 5449461624 5499919602 5547594240 5616939168 5676522525 5736448512 5794153984 5797299600 5850978300 5975467200 5980204800 6054957360 6111021780 6183786240 6241043520 6319056564 6458621184 6518423232 6722400600 6727730400 6790024200 6811827030 6870873600 6934492800 7021173960 7170560640 7176245760 7242692480 7265948832 7333226136 7420543488 7489252224 7568696700 7638777225 7729732800 7801304400 7898820705 7967289600 8073276480 8148029040 8249879403 8321391360 8425408752 8604672768 8691230976 8776467450 8963200800 8970307200 9053365600 9082436040 9153907200 9166532670 9245990400 9275679360 9361565280 9560747520 9687931776 9777634848 9985669632 10091595600 10185036300 10306310400 10401739200 10531760940 10755840960 10764368640 10864038720 10898923248 10999839204 11233878336 11353045050 11594599200 11701956600 11950934400 11960409600 12109914720 12222043560 12367572480 12482087040 12638113128 12917242368 13036846464 13164701175 13444801200 13455460800 13580048400 13623654060 13749799005 13868985600 14042347920 14341121280 14485384960 14531897664 14666452272 14978504448 15137393400 15277554450 15459465600 15602608800 15797641410 15934579200 16146552960 16296058080 16499758806 16642782720 16850817504 17029567575 17209345536 17382461952 17552934900 17926401600 17940614400 18106731200 18164872080 18333065340 18551358720 18723130560 19375863552 19555269696 20183191200 20370072600 20612620800 20803478400 21063521880 21511681920 21528737280 21728077440 21797846496 21999678408 22467756672 22706090100 22916331675 23189198400 23403913200 23901868800 24219829440 24444087120 24749638209 24964174080 25276226256 26073692928 26329402350 26889602400 26910921600 27160096800 27247308120 27499598010 27737971200 28084695840 28682242560 28970769920 29063795328 29332904544 29957008896 30274786800 30555108900 30918931200 31205217600 31595282820 32293105920 32592116160 32999517612 33701635008 34059135150 35105869800 35852803200 35881228800 36213462400 36329744160 36666130680 37102717440 37446261120 38751727104 39110539392 39494103525 40366382400 40740145200 41249397015 41606956800 42127043760 43023363840 43456154880 43595692992 43999356816 44935513344 45412180200 45832663350 46378396800 46807826400 47803737600 48439658880 48888174240 49499276418 49928348160 50552452512 52147385856 52658804700 53779204800 53821843200 54320193600 54494616240 54999196020 56169391680 58127590656 58665809088 60549573600 61110217800 61837862400 62410435200 63190565640 64586211840 65184232320 65999035224 67403270016 68118270300 68748995025 70211739600 71705606400 72426924800 72659488320 73332261360 74248914627 74892522240 78221078784 78988207050 80732764800 81480290400 82498794030 83213913600 84254087520 86046727680 86912309760 87191385984 87998713632 89871026688 90824360400 91665326700 92756793600 93615652800 96879317760 97776348480 98998552836 101104905024 105317609400 107558409600 107643686400 108640387200 108989232480 109998392040 112338783360 116255181312 117331618176 121099147200 122220435600 123748191045 124820870400 126381131280 130368464640 131998070448 134806540032 136236540600 137497990050 140423479200 143411212800 144853849600 145318976640 146664522720 148497829254 149785044480 156442157568 157976414100 161465529600 162960580800 164997588060 168508175040 174382771968 175997427264 181648720800 183330653400 185513587200 187231305600 193758635520 195552696960 197997105672 202209810048 206246985075 210635218800 215116819200 217280774400 217978464960 219996784080 224677566720 234663236352 242198294400 244440871200 247496382090 249641740800 252762262560 260736929280 263996140896 269613080064 272473081200 274995980100 280846958400 290637953280 293329045440 296995658508 315952828200 322931059200 325921161600 329995176120 337016350080 348765543936 351994854528 363297441600 366661306800 371244573135 374462611200 391105393920 395994211344 404419620096 412493970150 421270437600 430233638400 434561548800 435956929920 439993568160 449355133440 469326472704 484396588800 488881742400 494992764180 505524525120 527992281792 544946162400 549991960200 561693916800 581275906560 586658090880 593991317016 618740955225 631905656400 651842323200 659990352240 674032700160 703989709056 726594883200 733322613600 742489146270 748925222400 782210787840 791988422688 808839240192 824987940300 842540875200 871913859840 879987136320 968793177600 977763484800 989985528360 1011049050240 1055984563584 1089892324800 1099983920400 1123387833600 1173316181760 1187982634032 1237481910450 1263811312800 1303684646400 1319980704480 1348065400320 1407979418112 1453189766400 1466645227200 1484978292540 1583976845376 1649975880600 1685081750400 1743827719680 1759974272640 1856222865675 1955526969600 1979971056720 2022098100480 2111969127168 2179784649600 2199967840800 2246775667200 2346632363520 2375965268064 2474963820900 2527622625600 2639961408960 2906379532800 2933290454400 2969956585080 3167953690752 3299951761200 3370163500800 3519948545280 3712445731350 3911053939200 3959942113440 4044196200960 4223938254336 4359569299200 4399935681600 4751930536128 4949927641800 5055245251200 5279922817920 5866580908800 5939913170160 6335907381504 6599903522400 6740327001600 7039897090560 7424891462700 7919884226880 8719138598400 8799871363200 9503861072256 9899855283600 10110490502400 10559845635840 11733161817600 11879826340320 12671814763008 13199807044800 14849782925400 15839768453760 17599742726400 19007722144512 19799710567200 20220981004800 21119691271680 23759652680640 26399614089600 29699565850800 31679536907520 35199485452800 38015444289024 39599421134400 47519305361280 52799228179200 59399131701600 63359073815040 79198842268800 95038610722560 105598456358400 118798263403200 158397684537600 190077221445120 237596526806400 316795369075200 475193053612800 950386107225600
- Sum of all divisors σ(n): 3641688171950400
- Sum of proper divisors (its aliquot sum) s(n): 2691302064724800
- 950386107225600 is an abundant number, because the sum of its proper divisors (2691302064724800) is greater than itself. Its abundance is 1740915957499200
Bases of 950386107225600
- Binary: 110110000001011111000000100101001000010110000000002
- Hexadecimal: 0x3605F02521600
- Base-36: 9CVTCM0000
Squares and roots of 950386107225600
- 950386107225600 squared (9503861072256002) is 903233752807429660529295360000
- 950386107225600 cubed (9503861072256003) is 858420810245422930380124708058972553216000000
-
The
square root of 950386107225600 is 30828332.8648436647 -
The
cube root of 950386107225600 is 98318.0734021685
Scales and comparisons
How big is 950386107225600?- 950,386,107,225,600 seconds is equal to 30,219,338 years, 24 weeks, 4 days.
-
To count from 1 to 950,386,107,225,600 would take you about seventy-five million, five hundred forty-eight thousand, three hundred forty-six 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 950386107225600 cubic inches would be around 8193.2 feet tall.
Recreational maths with 950386107225600
- 950386107225600 backwards is 006522701683059
- 950386107225600 is a
Harshad number . - The number of decimal digits it has is: 15
- The sum of 950386107225600's digits is 54
- 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 950386107225600 - Facts about the integer". Numbermatics.com. 2024. Web. 16 May 2024.
APA style:
Numbermatics. (2024). Number 950386107225600 - Facts about the integer. Retrieved 16 May 2024, from https://numbermatics.com/n/950386107225600/
Chicago style:
Numbermatics. 2024. "Number 950386107225600 - Facts about the integer". https://numbermatics.com/n/950386107225600/
The information we have on file for 950386107225600 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 950386107225600, math, Factors of 950386107225600, curriculum, school, college, exams, university, Prime factorization of 950386107225600, STEM, science, technology, engineering, physics, economics, calculator, nine hundred fifty trillion, three hundred eighty-six billion, one hundred seven million, two hundred twenty-five thousand, six hundred.