2201781471805440
2,201,781,471,805,440 is an even composite number composed of five prime numbers multiplied together.
2201781471805440 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two thousand, one hundred twelve divisors.
Prime factorization of 2201781471805440:
223 × 310 × 5 × 7 × 127
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 7 × 127)See below for interesting mathematical facts about the number 2201781471805440 from the Numbermatics database.
Names of 2201781471805440
- Cardinal: 2201781471805440 can be written as Two quadrillion, two hundred one trillion, seven hundred eighty-one billion, four hundred seventy-one million, eight hundred five thousand, four hundred forty.
Scientific notation
- Scientific notation: 2.20178147180544 × 1015
Factors of 2201781471805440
Divisors of 2201781471805440
- Number of divisors d(n): 2112
-
Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 32 35 36 40 42 45 48 54 56 60 63 64 70 72 80 81 84 90 96 105 108 112 120 126 127 128 135 140 144 160 162 168 180 189 192 210 216 224 240 243 252 254 256 270 280 288 315 320 324 336 360 378 381 384 405 420 432 448 480 486 504 508 512 540 560 567 576 630 635 640 648 672 720 729 756 762 768 810 840 864 889 896 945 960 972 1008 1016 1024 1080 1120 1134 1143 1152 1215 1260 1270 1280 1296 1344 1440 1458 1512 1524 1536 1620 1680 1701 1728 1778 1792 1890 1905 1920 1944 2016 2032 2048 2160 2187 2240 2268 2286 2304 2430 2520 2540 2560 2592 2667 2688 2835 2880 2916 3024 3048 3072 3240 3360 3402 3429 3456 3556 3584 3645 3780 3810 3840 3888 4032 4064 4096 4320 4374 4445 4480 4536 4572 4608 4860 5040 5080 5103 5120 5184 5334 5376 5670 5715 5760 5832 6048 6096 6144 6480 6561 6720 6804 6858 6912 7112 7168 7290 7560 7620 7680 7776 8001 8064 8128 8192 8505 8640 8748 8890 8960 9072 9144 9216 9720 10080 10160 10206 10240 10287 10368 10668 10752 10935 11340 11430 11520 11664 12096 12192 12288 12960 13122 13335 13440 13608 13716 13824 14224 14336 14580 15120 15240 15309 15360 15552 16002 16128 16256 16384 17010 17145 17280 17496 17780 17920 18144 18288 18432 19440 19683 20160 20320 20412 20480 20574 20736 21336 21504 21870 22680 22860 23040 23328 24003 24192 24384 24576 25515 25920 26244 26670 26880 27216 27432 27648 28448 28672 29160 30240 30480 30618 30720 30861 31104 32004 32256 32512 32768 32805 34020 34290 34560 34992 35560 35840 36288 36576 36864 38880 39366 40005 40320 40640 40824 40960 41148 41472 42672 43008 43740 45360 45720 45927 46080 46656 48006 48384 48768 49152 51030 51435 51840 52488 53340 53760 54432 54864 55296 56896 57344 58320 59049 60480 60960 61236 61440 61722 62208 64008 64512 65024 65536 65610 68040 68580 69120 69984 71120 71680 72009 72576 73152 73728 76545 77760 78732 80010 80640 81280 81648 81920 82296 82944 85344 86016 87480 90720 91440 91854 92160 92583 93312 96012 96768 97536 98304 98415 102060 102870 103680 104976 106680 107520 108864 109728 110592 113792 114688 116640 118098 120015 120960 121920 122472 122880 123444 124416 128016 129024 130048 131072 131220 136080 137160 137781 138240 139968 142240 143360 144018 145152 146304 147456 153090 154305 155520 157464 160020 161280 162560 163296 163840 164592 165888 170688 172032 174960 181440 182880 183708 184320 185166 186624 192024 193536 195072 196608 196830 204120 205740 207360 209952 213360 215040 216027 217728 219456 221184 227584 229376 229635 233280 236196 240030 241920 243840 244944 245760 246888 248832 256032 258048 260096 262144 262440 272160 274320 275562 276480 277749 279936 284480 286720 288036 290304 292608 294912 295245 306180 308610 311040 314928 320040 322560 325120 326592 327680 329184 331776 341376 344064 349920 360045 362880 365760 367416 368640 370332 373248 384048 387072 390144 393216 393660 408240 411480 413343 414720 419904 426720 430080 432054 435456 438912 442368 455168 458752 459270 462915 466560 472392 480060 483840 487680 489888 491520 493776 497664 512064 516096 520192 524288 524880 544320 548640 551124 552960 555498 559872 568960 573440 576072 580608 585216 589824 590490 612360 617220 622080 629856 640080 645120 648081 650240 653184 655360 658368 663552 682752 688128 688905 699840 720090 725760 731520 734832 737280 740664 746496 768096 774144 780288 786432 787320 816480 822960 826686 829440 833247 839808 853440 860160 864108 870912 877824 884736 910336 917504 918540 925830 933120 944784 960120 967680 975360 979776 983040 987552 995328 1024128 1032192 1040384 1048576 1049760 1080135 1088640 1097280 1102248 1105920 1110996 1119744 1137920 1146880 1152144 1161216 1170432 1179648 1180980 1224720 1234440 1244160 1259712 1280160 1290240 1296162 1300480 1306368 1310720 1316736 1327104 1365504 1376256 1377810 1388745 1399680 1440180 1451520 1463040 1469664 1474560 1481328 1492992 1536192 1548288 1560576 1572864 1574640 1632960 1645920 1653372 1658880 1666494 1679616 1706880 1720320 1728216 1741824 1755648 1769472 1820672 1835008 1837080 1851660 1866240 1889568 1920240 1935360 1944243 1950720 1959552 1966080 1975104 1990656 2048256 2064384 2066715 2080768 2097152 2099520 2160270 2177280 2194560 2204496 2211840 2221992 2239488 2275840 2293760 2304288 2322432 2340864 2359296 2361960 2449440 2468880 2488320 2499741 2519424 2560320 2580480 2592324 2600960 2612736 2621440 2633472 2654208 2731008 2752512 2755620 2777490 2799360 2880360 2903040 2926080 2939328 2949120 2962656 2985984 3072384 3096576 3121152 3145728 3149280 3240405 3265920 3291840 3306744 3317760 3332988 3359232 3413760 3440640 3456432 3483648 3511296 3538944 3641344 3670016 3674160 3703320 3732480 3779136 3840480 3870720 3888486 3901440 3919104 3932160 3950208 3981312 4096512 4128768 4133430 4161536 4166235 4194304 4199040 4320540 4354560 4389120 4408992 4423680 4443984 4478976 4551680 4587520 4608576 4644864 4681728 4718592 4723920 4898880 4937760 4976640 4999482 5038848 5120640 5160960 5184648 5201920 5225472 5242880 5266944 5308416 5462016 5505024 5511240 5554980 5598720 5760720 5806080 5832729 5852160 5878656 5898240 5925312 5971968 6144768 6193152 6242304 6291456 6298560 6480810 6531840 6583680 6613488 6635520 6665976 6718464 6827520 6881280 6912864 6967296 7022592 7077888 7282688 7340032 7348320 7406640 7464960 7499223 7558272 7680960 7741440 7776972 7802880 7838208 7864320 7900416 7962624 8193024 8257536 8266860 8323072 8332470 8388608 8398080 8641080 8709120 8778240 8817984 8847360 8887968 8957952 9103360 9175040 9217152 9289728 9363456 9437184 9447840 9721215 9797760 9875520 9953280 9998964 10077696 10241280 10321920 10369296 10403840 10450944 10485760 10533888 10616832 10924032 11010048 11022480 11109960 11197440 11521440 11612160 11665458 11704320 11757312 11796480 11850624 11943936 12289536 12386304 12484608 12498705 12582912 12597120 12961620 13063680 13167360 13226976 13271040 13331952 13436928 13655040 13762560 13825728 13934592 14045184 14155776 14565376 14680064 14696640 14813280 14929920 14998446 15116544 15361920 15482880 15553944 15605760 15676416 15728640 15800832 15925248 16386048 16515072 16533720 16646144 16664940 16796160 17282160 17418240 17498187 17556480 17635968 17694720 17775936 17915904 18206720 18350080 18434304 18579456 18726912 18874368 18895680 19442430 19595520 19751040 19906560 19997928 20155392 20482560 20643840 20738592 20807680 20901888 20971520 21067776 21233664 21848064 22020096 22044960 22219920 22394880 23042880 23224320 23330916 23408640 23514624 23592960 23701248 23887872 24579072 24772608 24969216 24997410 25165824 25194240 25923240 26127360 26334720 26453952 26542080 26663904 26873856 27310080 27525120 27651456 27869184 28090368 28311552 29130752 29163645 29360128 29393280 29626560 29859840 29996892 30233088 30723840 30965760 31107888 31211520 31352832 31457280 31601664 31850496 32772096 33030144 33067440 33292288 33329880 33592320 34564320 34836480 34996374 35112960 35271936 35389440 35551872 35831808 36413440 36700160 36868608 37158912 37453824 37496115 37748736 37791360 38884860 39191040 39502080 39813120 39995856 40310784 40965120 41287680 41477184 41615360 41803776 41943040 42135552 42467328 43696128 44040192 44089920 44439840 44789760 46085760 46448640 46661832 46817280 47029248 47185920 47402496 47775744 49158144 49545216 49938432 49994820 50388480 51846480 52254720 52494561 52669440 52907904 53084160 53327808 53747712 54620160 55050240 55302912 55738368 56180736 56623104 58261504 58327290 58720256 58786560 59253120 59719680 59993784 60466176 61447680 61931520 62215776 62423040 62705664 62914560 63203328 63700992 65544192 66060288 66134880 66584576 66659760 67184640 69128640 69672960 69992748 70225920 70543872 70778880 71103744 71663616 72826880 73400320 73737216 74317824 74907648 74992230 75497472 75582720 77769720 78382080 79004160 79626240 79991712 80621568 81930240 82575360 82954368 83230720 83607552 84271104 84934656 87392256 87490935 88080384 88179840 88879680 89579520 92171520 92897280 93323664 93634560 94058496 94371840 94804992 95551488 98316288 99090432 99876864 99989640 100776960 103692960 104509440 104989122 105338880 105815808 106168320 106655616 107495424 109240320 110100480 110605824 111476736 112361472 113246208 116523008 116654580 117573120 118506240 119439360 119987568 120932352 122895360 123863040 124431552 124846080 125411328 125829120 126406656 127401984 131088384 132120576 132269760 133169152 133319520 134369280 138257280 139345920 139985496 140451840 141087744 141557760 142207488 143327232 145653760 146800640 147474432 148635648 149815296 149984460 151165440 155539440 156764160 158008320 159252480 159983424 161243136 163860480 165150720 165908736 166461440 167215104 168542208 169869312 174784512 174981870 176160768 176359680 177759360 179159040 184343040 185794560 186647328 187269120 188116992 188743680 189609984 191102976 196632576 198180864 199753728 199979280 201553920 207385920 209018880 209978244 210677760 211631616 212336640 213311232 214990848 218480640 220200960 221211648 222953472 224722944 226492416 233046016 233309160 235146240 237012480 238878720 239975136 241864704 245790720 247726080 248863104 249692160 250822656 252813312 254803968 262176768 262472805 264241152 264539520 266338304 266639040 268738560 276514560 278691840 279970992 280903680 282175488 283115520 284414976 286654464 291307520 293601280 294948864 297271296 299630592 299968920 302330880 311078880 313528320 316016640 318504960 319966848 322486272 327720960 330301440 331817472 332922880 334430208 337084416 339738624 349569024 349963740 352719360 355518720 358318080 368686080 371589120 373294656 374538240 376233984 377487360 379219968 382205952 393265152 396361728 399507456 399958560 403107840 414771840 418037760 419956488 421355520 423263232 424673280 426622464 429981696 436961280 440401920 442423296 445906944 449445888 466092032 466618320 470292480 474024960 477757440 479950272 483729408 491581440 495452160 497726208 499384320 501645312 505626624 509607936 524353536 524945610 528482304 529079040 532676608 533278080 537477120 553029120 557383680 559941984 561807360 564350976 566231040 568829952 573308928 582615040 589897728 594542592 599261184 599937840 604661760 622157760 627056640 632033280 637009920 639933696 644972544 655441920 660602880 663634944 665845760 668860416 674168832 679477248 699138048 699927480 705438720 711037440 716636160 737372160 743178240 746589312 749076480 752467968 758439936 764411904 786530304 792723456 799014912 799917120 806215680 829543680 836075520 839912976 842711040 846526464 849346560 853244928 859963392 873922560 880803840 884846592 891813888 898891776 932184064 933236640 940584960 948049920 955514880 959900544 967458816 983162880 990904320 995452416 998768640 1003290624 1011253248 1019215872 1048707072 1049891220 1058158080 1065353216 1066556160 1074954240 1106058240 1114767360 1119883968 1123614720 1128701952 1132462080 1137659904 1146617856 1165230080 1179795456 1189085184 1198522368 1199875680 1209323520 1244315520 1254113280 1264066560 1274019840 1279867392 1289945088 1310883840 1321205760 1327269888 1331691520 1337720832 1348337664 1398276096 1399854960 1410877440 1422074880 1433272320 1474744320 1486356480 1493178624 1498152960 1504935936 1516879872 1528823808 1573060608 1585446912 1598029824 1599834240 1612431360 1659087360 1672151040 1679825952 1685422080 1693052928 1698693120 1706489856 1719926784 1747845120 1769693184 1783627776 1797783552 1864368128 1866473280 1881169920 1896099840 1911029760 1919801088 1934917632 1966325760 1981808640 1990904832 1997537280 2006581248 2022506496 2038431744 2097414144 2099782440 2116316160 2133112320 2149908480 2212116480 2229534720 2239767936 2247229440 2257403904 2275319808 2293235712 2330460160 2359590912 2378170368 2397044736 2399751360 2418647040 2488631040 2508226560 2528133120 2548039680 2559734784 2579890176 2621767680 2642411520 2654539776 2663383040 2675441664 2696675328 2796552192 2799709920 2821754880 2844149760 2866544640 2949488640 2972712960 2986357248 2996305920 3009871872 3033759744 3057647616 3146121216 3196059648 3199668480 3224862720 3318174720 3344302080 3359651904 3370844160 3386105856 3397386240 3412979712 3439853568 3495690240 3539386368 3567255552 3595567104 3728736256 3732946560 3762339840 3792199680 3822059520 3839602176 3869835264 3932651520 3963617280 3981809664 3995074560 4013162496 4045012992 4194828288 4199564880 4232632320 4266224640 4299816960 4424232960 4459069440 4479535872 4494458880 4514807808 4550639616 4586471424 4660920320 4719181824 4756340736 4794089472 4799502720 4837294080 4977262080 5016453120 5056266240 5096079360 5119469568 5159780352 5243535360 5309079552 5326766080 5350883328 5393350656 5593104384 5599419840 5643509760 5688299520 5733089280 5898977280 5945425920 5972714496 5992611840 6019743744 6067519488 6115295232 6292242432 6399336960 6449725440 6636349440 6688604160 6719303808 6741688320 6772211712 6825959424 6879707136 6991380480 7078772736 7134511104 7191134208 7457472512 7465893120 7524679680 7584399360 7644119040 7679204352 7739670528 7865303040 7927234560 7963619328 7990149120 8026324992 8090025984 8389656576 8399129760 8465264640 8532449280 8599633920 8848465920 8918138880 8959071744 8988917760 9029615616 9101279232 9172942848 9321840640 9438363648 9588178944 9599005440 9674588160 9954524160 10032906240 10112532480 10192158720 10238939136 10319560704 10487070720 10618159104 10701766656 10786701312 11186208768 11198839680 11287019520 11376599040 11466178560 11797954560 11890851840 11945428992 11985223680 12039487488 12135038976 12584484864 12798673920 12899450880 13272698880 13377208320 13438607616 13483376640 13544423424 13651918848 13759414272 13982760960 14157545472 14269022208 14382268416 14931786240 15049359360 15168798720 15288238080 15358408704 15479341056 15730606080 15927238656 15980298240 16052649984 16180051968 16779313152 16798259520 16930529280 17064898560 17199267840 17696931840 17836277760 17918143488 17977835520 18059231232 18202558464 18345885696 18643681280 18876727296 19198010880 19349176320 19909048320 20065812480 20225064960 20477878272 20639121408 20974141440 21236318208 21403533312 21573402624 22372417536 22397679360 22574039040 22753198080 22932357120 23595909120 23781703680 23890857984 23970447360 24078974976 24270077952 25168969728 25597347840 25798901760 26545397760 26754416640 26877215232 26966753280 27088846848 27303837696 27518828544 27965521920 28315090944 28764536832 29863572480 30098718720 30337597440 30576476160 30716817408 30958682112 31461212160 31854477312 32105299968 32360103936 33558626304 33596519040 33861058560 34129797120 34398535680 35393863680 35672555520 35836286976 35955671040 36118462464 36405116928 37287362560 37753454592 38396021760 38698352640 39818096640 40131624960 40450129920 40955756544 41278242816 41948282880 42472636416 42807066624 43146805248 44795358720 45148078080 45506396160 45864714240 47191818240 47781715968 47940894720 48157949952 48540155904 50337939456 51194695680 51597803520 53090795520 53508833280 53754430464 53933506560 54177693696 54607675392 55037657088 55931043840 56630181888 59727144960 60197437440 60675194880 61433634816 61917364224 62922424320 63708954624 64210599936 64720207872 67117252608 67193038080 67722117120 68259594240 68797071360 70787727360 71345111040 71672573952 71911342080 72236924928 72810233856 75506909184 76792043520 77396705280 79636193280 80263249920 80900259840 81911513088 82556485632 83896565760 84945272832 86293610496 89590717440 90296156160 91012792320 91729428480 94383636480 95563431936 96315899904 97080311808 100675878912 102389391360 103195607040 106181591040 107017666560 107508860928 107867013120 108355387392 109215350784 111862087680 113260363776 119454289920 120394874880 121350389760 122867269632 123834728448 125844848640 127417909248 128421199872 129440415744 134386076160 135444234240 136519188480 137594142720 141575454720 143345147904 143822684160 144473849856 145620467712 151013818368 153584087040 154793410560 159272386560 160526499840 161800519680 163823026176 165112971264 167793131520 169890545664 179181434880 180592312320 182025584640 188767272960 191126863872 192631799808 194160623616 201351757824 204778782720 206391214080 212363182080 214035333120 215017721856 215734026240 216710774784 218430701568 226520727552 238908579840 240789749760 242700779520 245734539264 247669456896 251689697280 254835818496 258880831488 268772152320 270888468480 273038376960 275188285440 283150909440 286690295808 288947699712 291240935424 302027636736 307168174080 309586821120 318544773120 321052999680 323601039360 327646052352 335586263040 339781091328 358362869760 361184624640 364051169280 377534545920 382253727744 385263599616 388321247232 409557565440 412782428160 424726364160 430035443712 431468052480 433421549568 436861403136 453041455104 477817159680 481579499520 485401559040 491469078528 495338913792 503379394560 509671636992 537544304640 541776936960 546076753920 566301818880 573380591616 577895399424 582481870848 604055273472 614336348160 619173642240 637089546240 642105999360 647202078720 655292104704 679562182656 716725739520 722369249280 728102338560 755069091840 764507455488 776642494464 819115130880 825564856320 849452728320 860070887424 866843099136 873722806272 906082910208 955634319360 963158999040 970803118080 982938157056 1006758789120 1019343273984 1075088609280 1083553873920 1092153507840 1132603637760 1146761183232 1155790798848 1164963741696 1228672696320 1238347284480 1274179092480 1294404157440 1310584209408 1359124365312 1433451479040 1444738498560 1456204677120 1510138183680 1529014910976 1638230261760 1698905456640 1720141774848 1733686198272 1747445612544 1812165820416 1911268638720 1926317998080 1941606236160 1965876314112 2038686547968 2150177218560 2167107747840 2184307015680 2265207275520 2293522366464 2329927483392 2457345392640 2476694568960 2548358184960 2621168418816 2718248730624 2866902958080 2889476997120 2912409354240 3020276367360 3058029821952 3276460523520 3397810913280 3440283549696 3467372396544 3494891225088 3822537277440 3883212472320 3931752628224 4077373095936 4300354437120 4334215495680 4368614031360 4530414551040 4587044732928 4914690785280 5096716369920 5242336837632 5436497461248 5733805916160 5778953994240 5824818708480 6116059643904 6552921047040 6795621826560 6880567099392 6989782450176 7645074554880 7863505256448 8154746191872 8600708874240 8668430991360 8737228062720 9060829102080 9174089465856 9829381570560 10193432739840 10484673675264 11467611832320 11649637416960 12232119287808 13105842094080 13591243653120 13761134198784 15290149109760 15727010512896 16309492383744 17201417748480 17336861982720 17474456125440 18348178931712 19658763141120 20386865479680 20969347350528 22935223664640 24464238575616 26211684188160 27182487306240 27522268397568 30580298219520 31454021025792 34402835496960 34948912250880 36696357863424 39317526282240 40773730959360 45870447329280 48928477151232 52423368376320 55044536795136 61160596439040 62908042051584 68805670993920 73392715726848 78635052564480 81547461918720 91740894658560 104846736752640 110089073590272 122321192878080 137611341987840 146785431453696 157270105128960 183481789317120 220178147180544 244642385756160 275222683975680 314540210257920 366963578634240 440356294361088 550445367951360 733927157268480 1100890735902720 2201781471805440
- Sum of all divisors σ(n): 9130034775214080
- Sum of proper divisors (its aliquot sum) s(n): 6928253303408640
- 2201781471805440 is an abundant number, because the sum of its proper divisors (6928253303408640) is greater than itself. Its abundance is 4726471831603200
Bases of 2201781471805440
- Binary: 1111101001010000010001100101000000000000000000000002
- Hexadecimal: 0x7D28232800000
- Base-36: LOGSG00000
Squares and roots of 2201781471805440
- 2201781471805440 squared (22017814718054402) is 4847841649585729577653213593600
- 2201781471805440 cubed (22017814718054403) is 10673887922304579788335831385018808542429184000
-
The
square root of 2201781471805440 is 46923144.3085972235 -
The
cube root of 2201781471805440 is 130094.2407742065
Scales and comparisons
How big is 2201781471805440?- 2,201,781,471,805,440 seconds is equal to 70,009,840 years, 12 weeks, 5 days, 14 hours, 24 minutes.
-
To count from 1 to 2,201,781,471,805,440 would take you about two hundred ten million, twenty-nine thousand, five hundred twenty 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 2201781471805440 cubic inches would be around 10841.2 feet tall.
Recreational maths with 2201781471805440
- 2201781471805440 backwards is 0445081741871022
- 2201781471805440 is a
Harshad number . - The number of decimal digits it has is: 16
- The sum of 2201781471805440'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 2201781471805440 - Facts about the integer". Numbermatics.com. 2024. Web. 12 May 2024.
APA style:
Numbermatics. (2024). Number 2201781471805440 - Facts about the integer. Retrieved 12 May 2024, from https://numbermatics.com/n/2201781471805440/
Chicago style:
Numbermatics. 2024. "Number 2201781471805440 - Facts about the integer". https://numbermatics.com/n/2201781471805440/
The information we have on file for 2201781471805440 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 2201781471805440, math, Factors of 2201781471805440, curriculum, school, college, exams, university, Prime factorization of 2201781471805440, STEM, science, technology, engineering, physics, economics, calculator, two quadrillion, two hundred one trillion, seven hundred eighty-one billion, four hundred seventy-one million, eight hundred five thousand, four hundred forty.