202987690589968128
202,987,690,589,968,128 is an even composite number composed of five prime numbers multiplied together.
What does the number 202987690589968128 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 1944 divisors.
202987690589968128 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one thousand, nine hundred forty-four divisors.
Prime factorization of 202987690589968128:
28 × 35 × 135 × 17 × 7192
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 13 × 13 × 13 × 13 × 13 × 17 × 719 × 719)See below for interesting mathematical facts about the number 202987690589968128 from the Numbermatics database.
Names of 202987690589968128
- Cardinal: 202987690589968128 can be written as Two hundred two quadrillion, nine hundred eighty-seven trillion, six hundred ninety billion, five hundred eighty-nine million, nine hundred sixty-eight thousand, one hundred twenty-eight.
Scientific notation
- Scientific notation: 2.02987690589968128 × 1017
Factors of 202987690589968128
Divisors of 202987690589968128
- Number of divisors d(n): 1944
-
Complete list of divisors:
1 2 3 4 6 8 9 12 13 16 17 18 24 26 27 32 34 36 39 48 51 52 54 64 68 72 78 81 96 102 104 108 117 128 136 144 153 156 162 169 192 204 208 216 221 234 243 256 272 288 306 312 324 338 351 384 408 416 432 442 459 468 486 507 544 576 612 624 648 663 676 702 719 768 816 832 864 884 918 936 972 1014 1053 1088 1152 1224 1248 1296 1326 1352 1377 1404 1438 1521 1632 1664 1728 1768 1836 1872 1944 1989 2028 2106 2157 2176 2197 2304 2448 2496 2592 2652 2704 2754 2808 2873 2876 3042 3159 3264 3328 3456 3536 3672 3744 3888 3978 4056 4131 4212 4314 4352 4394 4563 4896 4992 5184 5304 5408 5508 5616 5746 5752 5967 6084 6318 6471 6528 6591 6912 7072 7344 7488 7776 7956 8112 8262 8424 8619 8628 8788 9126 9347 9792 9984 10368 10608 10816 11016 11232 11492 11504 11934 12168 12223 12636 12942 13056 13182 13689 14144 14688 14976 15552 15912 16224 16524 16848 17238 17256 17576 17901 18252 18694 19413 19584 19773 20736 21216 21632 22032 22464 22984 23008 23868 24336 24446 25272 25857 25884 26364 27378 28041 28288 28561 29376 29952 31104 31824 32448 33048 33696 34476 34512 35152 35802 36504 36669 37349 37388 38826 39168 39546 41067 42432 43264 44064 44928 45968 46016 47736 48672 48892 50544 51714 51768 52728 53703 54756 56082 56576 57122 58239 58752 59319 62208 63648 64896 66096 67392 68952 69024 70304 71604 73008 73338 74698 74776 77571 77652 79092 82134 84123 84864 85683 88128 89856 91936 92032 95472 97344 97784 101088 103428 103536 105456 107406 109512 110007 112047 112164 114244 116478 117504 118638 121511 127296 129792 132192 134784 137904 138048 140608 143208 146016 146676 149396 149552 155142 155304 158184 158899 164268 168246 169728 171366 174717 176256 177957 183872 184064 190944 194688 195568 202176 206856 207072 210912 214812 219024 220014 224094 224328 228488 232713 232956 237276 243022 252369 254592 257049 264384 269568 275808 276096 281216 286416 292032 293352 298792 299104 310284 310608 316368 317798 328536 330021 336141 336492 342732 349434 352512 355914 364533 367744 371293 381888 389376 391136 404352 413712 414144 421824 429624 438048 440028 448188 448656 456976 465426 465912 474552 476697 485537 486044 504738 509184 514098 516961 528768 533871 551616 552192 562432 572832 584064 586704 597584 598208 620568 621216 632736 635596 657072 660042 672282 672984 685464 698139 698868 711828 729066 735488 742586 757107 763776 771147 782272 808704 827424 828288 843648 859248 876096 880056 896376 897312 913952 930852 931824 949104 953394 971074 972088 990063 1008423 1009476 1028196 1033922 1057536 1067742 1093599 1103232 1113879 1145664 1168128 1173408 1195168 1196416 1241136 1242432 1265472 1271192 1314144 1320084 1344564 1345968 1370928 1396278 1397736 1423656 1430091 1456611 1458132 1485172 1514214 1527552 1542294 1550883 1564544 1579643 1654848 1656576 1687296 1718496 1752192 1760112 1792752 1794624 1827904 1861704 1863648 1898208 1906788 1942148 1944176 1980126 2016846 2018952 2056392 2065687 2067844 2135484 2187198 2206464 2227758 2271321 2291328 2313441 2346816 2390336 2392832 2482272 2484864 2530944 2542384 2628288 2640168 2689128 2691936 2741856 2792556 2795472 2847312 2860182 2913222 2916264 2970189 2970344 3025269 3028428 3084588 3101766 3129088 3159286 3280797 3309696 3341637 3436992 3504384 3520224 3585504 3589248 3655808 3723408 3727296 3796416 3813576 3884296 3888352 3960252 4033692 4037904 4112784 4131374 4135688 4270968 4290273 4369833 4374396 4455516 4542642 4582656 4626882 4652649 4693632 4738929 4780672 4964544 4969728 5061888 5084768 5256576 5280336 5378256 5383872 5483712 5585112 5590944 5694624 5720364 5826444 5832528 5940378 5940688 6050538 6056856 6169176 6197061 6203532 6311981 6318572 6561594 6619392 6683274 6720493 6873984 6940323 7040448 7171008 7178496 7311616 7446816 7454592 7592832 7627152 7768592 7776704 7920504 8067384 8075808 8225568 8262748 8271376 8541936 8580546 8739666 8748792 8788337 8911032 9075807 9085284 9253764 9305298 9387264 9477858 9561344 9842391 9929088 10024911 10169536 10513152 10560672 10756512 10767744 10967424 11170224 11181888 11389248 11440728 11652888 11665056 11880756 11881376 12101076 12113712 12338352 12394122 12407064 12623962 12637144 12870819 13109499 13123188 13366548 13440986 13747968 13880646 13957947 14080896 14216787 14342016 14893632 14909184 15185664 15254304 15537184 15553408 15841008 16134768 16151616 16451136 16525496 16542752 17083872 17161092 17479332 17497584 17576674 17822064 18151614 18170568 18507528 18591183 18610596 18935943 18955716 19684782 19858176 20049822 20161479 20339072 20535359 21121344 21513024 21535488 21934848 22340448 22363776 22778496 22881456 23305776 23330112 23761512 23762752 24202152 24227424 24676704 24788244 24814128 25247924 25274288 25741638 26218998 26246376 26365011 26733096 26853931 26881972 27761292 27915894 28161792 28433574 28684032 29527173 29787264 30074733 30508608 31074368 31106816 31682016 32269536 32303232 32902272 33050992 33085504 34167744 34322184 34958664 34995168 35153348 35644128 36303228 36341136 37015056 37182366 37221192 37871886 37911432 38612457 39328497 39369564 40099644 40322958 40678144 41070718 41873841 42242688 42650361 43026048 44680896 44727552 45556992 45762912 46611552 46660224 47523024 47525504 48404304 48454848 49353408 49576488 49628256 50495848 50548576 51483276 52437996 52492752 52730022 53466192 53707862 53763944 55522584 55773549 55831788 56807829 56867148 59054346 59574528 60149466 60484437 61017216 61606077 62148736 63364032 64539072 64606464 65804544 66101984 66171008 68335488 68644368 69917328 69990336 70306696 71288256 72606456 72682272 74030112 74364732 74442384 75743772 75822864 77224914 78656994 78739128 79095033 80199288 80561793 80645916 82141436 83747682 84485376 85300722 86052096 87366409 89361792 90224199 91525824 93223104 93320448 95046048 95051008 96808608 96909696 98706816 99152976 99256512 100991696 101097152 102966552 104875992 104985504 105460044 106932384 107415724 107527888 111045168 111547098 111663576 113615658 113734296 114248381 117985491 118108692 120298932 120968874 122034432 123212154 124297472 125621523 126728064 127951083 129078144 132203968 132342016 136670976 137288736 139834656 139980672 140613392 142576512 145212912 145364544 148060224 148729464 148884768 151487544 151645728 154449828 157313988 157478256 158190066 160398576 161123586 161291832 164282872 167320647 167495364 170423487 170601444 174732818 178723584 180448398 181453311 183051648 184818231 186446208 190092096 193617216 193819392 197413632 198305952 198513024 201983392 202194304 205933104 209751984 209971008 210920088 213864768 214831448 215055776 222090336 223094196 223327152 227231316 227468592 228496762 235970982 236217384 237285099 240597864 241685379 241937748 246424308 251243046 253456128 255902166 258156288 262099227 264407936 266959667 274577472 279669312 279961344 281226784 285153024 290425824 290729088 296120448 297458928 297769536 302975088 303291456 308899656 314627976 314956512 316380132 320797152 322247172 322583664 328565744 334641294 334990728 340846974 341202888 342745143 349101103 349465636 360896796 362906622 366103296 369636462 372892416 380184192 383853249 387234432 396611904 397026048 403966784 404388608 411866208 419503968 419942016 421840176 427729536 429662896 430111552 444180672 446188392 446654304 454462632 454937184 456993524 471941964 472434768 474570198 481195728 483370758 483875496 492848616 501961941 502486092 511270461 511804332 524198454 528815872 533919334 544359933 549154944 554454693 559338624 562453568 580851648 581458176 592240896 594917856 595539072 605950176 606582912 617799312 629255952 629913024 632760264 641594304 644494344 645167328 657131488 669282588 669981456 681693948 682405776 685490286 698202206 698931272 711855297 721793592 725056137 725813244 739272924 760368384 767706498 774468864 786297681 793223808 800879001 807933568 823732416 839007936 839884032 843680352 855459072 859325792 860223104 888361344 892376784 893308608 908925264 909874368 913987048 943883928 944869536 949140396 962391456 966741516 967750992 985697232 1003923882 1004972184 1022540922 1023608664 1028235429 1047303309 1048396908 1067838668 1088719866 1098309888 1108909386 1118677248 1124907136 1135763317 1161703296 1189835712 1191078144 1211900352 1213165824 1235598624 1258511904 1259826048 1265520528 1283188608 1288988688 1290334656 1314262976 1338565176 1339962912 1363387896 1364811552 1370980572 1396404412 1397862544 1423710594 1443587184 1450112274 1451626488 1478545848 1485228953 1533811383 1535412996 1572595362 1586447616 1601758002 1615867136 1633079799 1647464832 1663364079 1678015872 1687360704 1718651584 1720446208 1776722688 1784753568 1786617216 1817850528 1819748736 1827974096 1887767856 1889739072 1898280792 1924782912 1933483032 1935501984 1971394464 2007847764 2009944368 2045081844 2047217328 2056470858 2094606618 2096793816 2135565891 2135677336 2175168411 2177439732 2217818772 2249814272 2271526634 2323406592 2358893043 2379671424 2402637003 2423800704 2471197248 2517023808 2519652096 2531041056 2566377216 2577977376 2580669312 2628525952 2677130352 2679925824 2726775792 2729623104 2741961144 2792808824 2795725088 2847421188 2887174368 2900224548 2903252976 2957091696 2970457906 3067622766 3070825992 3084706287 3141909927 3145190724 3203516004 3266159598 3294929664 3326728158 3356031744 3374721408 3407289951 3437303168 3569507136 3573234432 3635701056 3639497472 3655948192 3775535712 3779478144 3796561584 3849565824 3866966064 3871003968 3942788928 4015695528 4019888736 4090163688 4094434656 4112941716 4189213236 4193587632 4271131782 4271354672 4350336822 4354879464 4435637544 4455686859 4538314339 4543053268 4717786086 4759342848 4805274006 4847601408 4942394496 4990092237 5034047616 5062082112 5155954752 5161338624 5257051904 5354260704 5359851648 5453551584 5459246208 5483922288 5585617648 5591450176 5694842376 5774348736 5800449096 5806505952 5914183392 5940915812 6135245532 6141651984 6169412574 6283819854 6290381448 6407032008 6525505233 6532319196 6653456316 6749442816 6814579902 6874606336 7076679129 7139014272 7207911009 7271402112 7311896384 7551071424 7558956288 7593123168 7699131648 7733932128 7742007936 7885577856 8031391056 8039777472 8180327376 8188869312 8225883432 8378426472 8387175264 8542263564 8542709344 8700673644 8709758928 8871275088 8911373718 9076628678 9086106536 9254118861 9425729781 9435572172 9610548012 9884788992 9980184474 10068095232 10124164224 10221869853 10311909504 10708521408 10719703296 10907103168 10918492416 10967844576 11171235296 11182900352 11389684752 11548697472 11600898192 11613011904 11828366784 11881831624 12270491064 12283303968 12338825148 12567639708 12580762896 12814064016 13051010466 13064638392 13306912632 13367060577 13614943017 13629159804 14153358258 14278028544 14415822018 14542804224 14623792768 14764923121 15102142848 15186246336 15467864256 15484015872 15771155712 16062782112 16079554944 16360654752 16377738624 16451766864 16756852944 16774350528 17084527128 17085418688 17401347288 17419517856 17742550176 17822747436 18153257356 18172213072 18508237722 18851459562 18871144344 19221096024 19307976389 19960368948 20248328448 20443739706 20623819008 21230037387 21417042816 21623733027 21814206336 21935689152 22342470592 22365800704 22779369504 23097394944 23201796384 23226023808 23656733568 23763663248 24540982128 24566607936 24677650296 25135279416 25161525792 25628128032 26102020932 26129276784 26613825264 26734121154 27229886034 27258319608 27762356583 28277189343 28306716516 28831644036 29247585536 29529846242 30204285696 30372492672 30665609559 30935728512 32125564224 32159109888 32721309504 32755477248 32903533728 33513705888 33548701056 34169054256 34170837376 34802694576 34839035712 35485100352 35645494872 36306514712 36344426144 37016475444 37702919124 37742288688 38442192048 38615952778 39920737896 40101181731 40844829051 40887479412 42460074774 42834085632 43247466054 43628412672 43871378304 44294769363 44684941184 45558739008 46403592768 46452047616 47313467136 47527326496 49081964256 49133215872 49355300592 50270558832 50323051584 51256256064 52204041864 52258553568 53227650528 53468242308 54459772068 54516639216 55524713166 56554378686 56613433032 57663288072 57923929167 59059692484 60744985344 61331219118 61871457024 64251128448 64871199081 65442619008 65807067456 67027411776 67097402112 68338108512 68341674752 69605389152 69678071424 70970200704 71290989744 72613029424 72688852288 74032950888 75405838248 75484577376 76884384096 77231905556 79841475792 80202363462 81689658102 81774958824 84831568029 84920149548 86494932108 87742756608 88589538726 89369882368 91117478016 91996828677 92807185536 95054652992 98163928512 98266431744 98710601184 100541117664 100646103168 102512512128 104408083728 104517107136 106455301056 106936484616 108919544136 109033278432 111049426332 113108757372 113226866064 115326576144 115847858334 118119384968 120303545193 122534487153 122662438236 128502256896 129742398162 130885238016 131614134912 132884308089 134054823552 136676217024 139210778304 139356142848 141940401408 142581979488 145226058848 145377704576 148065901776 150811676496 150969154752 153768768192 154463811112 159682951584 160404726924 163379316204 163549917648 169663136058 169840299096 172989864216 173771787501 177179077452 182234956032 183993657354 185614371072 190109305984 191944000573 196327857024 197421202368 201082235328 201292206336 205025024256 208816167456 209034214272 212910602112 213872969232 217839088272 218066556864 222098852664 226217514744 226453732128 230653152288 231695716668 236238769936 240607090386 245068974306 245324876472 251003693057 259484796324 263228269824 265768616178 268109647104 273352434048 275990486031 278421556608 285163958976 290452117696 290755409152 296131803552 301623352992 301938309504 307537536384 308927622224 319365903168 320809453848 326758632408 327099835296 339326272116 339680598192 345979728432 347543575002 354358154904 360910635579 367603461459 367987314708 380218611968 383888001146 392655714048 394842404736 398652924267 402164470656 417632334912 418068428544 425821204224 427745938464 435678176544 436133113728 444197705328 452435029488 452907464256 461306304576 463391433336 472477539872 481214180772 490137948612 490649752944 502007386114 518969592648 521315362503 531537232356 546704868096 551980972062 556843113216 570327917952 575832001719 580904235392 592263607104 603246705984 603876619008 615075072768 617855244448 638731806336 641618907696 653517264816 654199670592 678652544232 679361196384 691959456864 695087150004 708716309808 721821271158 735206922918 735974629416 753011079171 767776002292 789684809472 797305848534 804328941312 835264669824 855491876928 871356353088 872266227456 888395410656 904870058976 905814928512 922612609152 926782866672 944955079744 962428361544 980275897224 981299505888 1004014772228 1037939185296 1042630725006 1063074464712 1102810384377 1103961944124 1140655835904 1151664003438 1161808470784 1184527214208 1195958772801 1206493411968 1235710488896 1277463612672 1283237815392 1307034529632 1308399341184 1357305088464 1358722392768 1383918913728 1390174300008 1417432619616 1443642542316 1470413845836 1471949258832 1506022158342 1535552004584 1563946087509 1594611697068 1670529339648 1710983753856 1727496005157 1742712706176 1776790821312 1809740117952 1811629857024 1845225218304 1853565733344 1889910159488 1924856723088 1960551794448 1962599011776 2008029544456 2075878370592 2085261450012 2126148929424 2205620768754 2207923888248 2259033237513 2303328006876 2369054428416 2391917545602 2412986823936 2471420977792 2566475630784 2614069059264 2616798682368 2714610176928 2717444785536 2767837827456 2780348600016 2834865239232 2887285084632 2940827691672 2943898517664 3012044316684 3071104009168 3127892175018 3189223394136 3263048009741 3421967507712 3454992010314 3485425412352 3553581642624 3587876318403 3619480235904 3707131466688 3779820318976 3849713446176 3921103588896 3925198023552 4016059088912 4151756741184 4170522900024 4252297858848 4411241537508 4415847776496 4518066475026 4606656013752 4691838262527 4783835091204 4942841955584 5132951261568 5182488015471 5228138118528 5429220353856 5434889571072 5535675654912 5560697200032 5669730478464 5774570169264 5881655383344 5887797035328 6024088633368 6142208018336 6255784350036 6378446788272 6526096019482 6777099712539 6909984020628 7107163285248 7175752636806 7238960471808 7414262933376 7699426892352 7842207177792 7850396047104 8032118177824 8303513482368 8341045800048 8504595717696 8822483075016 8831695552992 9036132950052 9213312027504 9383676525054 9567670182408 9789144029223 10265902523136 10364976030942 10456276237056 10858440707712 11121394400064 11339460956928 11549140338528 11763310766688 11775594070656 12048177266736 12284416036672 12511568700072 12756893576544 13052192038964 13554199425078 13819968041256 14351505273612 14828525866752 15398853784704 15547464046413 15684414355584 16064236355648 16607026964736 16682091600096 17009191435392 17644966150032 17663391105984 18072265900104 18426624055008 18767353050108 19135340364816 19578288058446 20331299137617 20729952061884 21716881415424 22242788800128 23098280677056 23526621533376 23551188141312 24096354533472 24568832073344 25023137400144 25513787153088 26104384077928 27108398850156 27639936082512 28703010547224 29367432087669 30797707569408 31094928092826 31368828711168 32128472711296 33364183200192 34018382870784 35289932300064 35326782211968 36144531800208 36853248110016 37534706100216 38270680729632 39156576116892 40662598275234 41459904123768 44485577600256 46196561354112 46642392139239 47053243066752 48192709066944 49137664146688 50046274800288 51027574306176 52208768155856 54216797700312 55279872165024 57406021094448 58734864175338 60993897412851 62189856185652 64256945422592 66728366400384 70579864600128 70653564423936 72289063600416 73706496220032 75069412200432 76541361459264 78313152233784 81325196550468 82919808247536 88102296263007 92393122708224 93284784278478 94106486133504 96385418133888 100092549600576 102055148612352 104417536311712 108433595400624 110559744330048 114812042188896 117469728350676 121987794825702 124379712371304 133456732800768 141159729200256 144578127200832 147412992440064 150138824400864 153082722918528 156626304467568 162650393100936 165839616495072 176204592526014 186569568556956 192770836267776 200185099201152 208835072623424 216867190801248 221119488660096 229624084377792 234939456701352 243975589651404 248759424742608 264306888789021 282319458400512 289156254401664 300277648801728 306165445837056 313252608935136 325300786201872 331679232990144 352409185052028 373139137113912 400370198402304 417670145246848 433734381602496 442238977320192 459248168755584 469878913402704 487951179302808 497518849485216 528613777578042 578312508803328 600555297603456 626505217870272 650601572403744 663358465980288 704818370104056 746278274227824 792920666367063 835340290493696 867468763204992 918496337511168 939757826805408 975902358605616 995037698970432 1057227555156084 1201110595206912 1253010435740544 1301203144807488 1326716931960576 1409636740208112 1492556548455648 1585841332734126 1734937526409984 1879515653610816 1951804717211232 1990075397940864 2114455110312168 2506020871481088 2602406289614976 2819273480416224 2985113096911296 3171682665468252 3759031307221632 3903609434422464 3980150795881728 4228910220624336 5204812579229952 5638546960832448 5970226193822592 6343365330936504 7518062614443264 7807218868844928 8457820441248672 11277093921664896 11940452387645184 12686730661873008 15614437737689856 16915640882497344 22554187843329792 25373461323746016 33831281764994688 50746922647492032 67662563529989376 101493845294984064 202987690589968128
- Sum of all divisors σ(n): 697165347517945488
- Sum of proper divisors (its aliquot sum) s(n): 494177656927977360
- 202987690589968128 is an abundant number, because the sum of its proper divisors (494177656927977360) is greater than itself. Its abundance is 291189966338009232
Bases of 202987690589968128
- Binary: 10110100010010100000111010101001110110010001010111000000002
- Hexadecimal: 0x2D1283AA7645700
- Base-36: 1JIP4PPIEO00
Squares and roots of 202987690589968128
- 202987690589968128 squared (2029876905899681282) is 41204002531048635300751032055824384
- 202987690589968128 cubed (2029876905899681283) is 8363905316840763996701932507466546129875663325233152
-
The
square root of 202987690589968128 is 450541552.5675385783 -
The
cube root of 202987690589968128 is 587701.1865329955
Scales and comparisons
How big is 202987690589968128?- 202,987,690,589,968,128 seconds is equal to 6,454,380,678 years, 31 weeks, 4 days, 12 hours, 28 minutes, 48 seconds.
-
To count from 1 to 202,987,690,589,968,128 would take you about nineteen billion, three hundred sixty-three million, one hundred forty-two thousand and thirty-five 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 202987690589968128 cubic inches would be around 48975.1 feet tall.
Recreational maths with 202987690589968128
- 202987690589968128 backwards is 821869985096789202
- The number of decimal digits it has is: 18
- The sum of 202987690589968128's digits is 99
- 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 202987690589968128 - Facts about the integer". Numbermatics.com. 2024. Web. 18 June 2024.
APA style:
Numbermatics. (2024). Number 202987690589968128 - Facts about the integer. Retrieved 18 June 2024, from https://numbermatics.com/n/202987690589968128/
Chicago style:
Numbermatics. 2024. "Number 202987690589968128 - Facts about the integer". https://numbermatics.com/n/202987690589968128/
The information we have on file for 202987690589968128 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 202987690589968128, math, Factors of 202987690589968128, curriculum, school, college, exams, university, Prime factorization of 202987690589968128, STEM, science, technology, engineering, physics, economics, calculator, two hundred two quadrillion, nine hundred eighty-seven trillion, six hundred ninety billion, five hundred eighty-nine million, nine hundred sixty-eight thousand, one hundred twenty-eight.