835206254208576000
835,206,254,208,576,000 is an even composite number composed of five prime numbers multiplied together.
835206254208576000 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one thousand, nine hundred twenty divisors.
Prime factorization of 835206254208576000:
29 × 33 × 53 × 172 × 11873
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 5 × 5 × 17 × 17 × 1187 × 1187 × 1187)See below for interesting mathematical facts about the number 835206254208576000 from the Numbermatics database.
Names of 835206254208576000
- Cardinal: 835206254208576000 can be written as Eight hundred thirty-five quadrillion, two hundred six trillion, two hundred fifty-four billion, two hundred eight million, five hundred seventy-six thousand.
Scientific notation
- Scientific notation: 8.35206254208576 × 1017
Factors of 835206254208576000
Divisors of 835206254208576000
- Number of divisors d(n): 1920
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 17 18 20 24 25 27 30 32 34 36 40 45 48 50 51 54 60 64 68 72 75 80 85 90 96 100 102 108 120 125 128 135 136 144 150 153 160 170 180 192 200 204 216 225 240 250 255 256 270 272 288 289 300 306 320 340 360 375 384 400 408 425 432 450 459 480 500 510 512 540 544 576 578 600 612 640 675 680 720 750 765 768 800 816 850 864 867 900 918 960 1000 1020 1080 1088 1125 1152 1156 1187 1200 1224 1275 1280 1350 1360 1440 1445 1500 1530 1536 1600 1632 1700 1728 1734 1800 1836 1920 2000 2040 2125 2160 2176 2250 2295 2304 2312 2374 2400 2448 2550 2560 2601 2700 2720 2880 2890 3000 3060 3200 3264 3375 3400 3456 3468 3561 3600 3672 3825 3840 4000 4080 4250 4320 4335 4352 4500 4590 4608 4624 4748 4800 4896 5100 5202 5400 5440 5760 5780 5935 6000 6120 6375 6400 6528 6750 6800 6912 6936 7122 7200 7225 7344 7650 7680 7803 8000 8160 8500 8640 8670 8704 9000 9180 9248 9496 9600 9792 10200 10404 10683 10800 10880 11475 11520 11560 11870 12000 12240 12750 12800 13005 13056 13500 13600 13824 13872 14244 14400 14450 14688 15300 15606 16000 16320 17000 17280 17340 17805 18000 18360 18496 18992 19125 19200 19584 20179 20400 20808 21366 21600 21675 21760 22950 23040 23120 23740 24000 24480 25500 26010 26112 27000 27200 27744 28488 28800 28900 29376 29675 30600 31212 32000 32049 32640 34000 34560 34680 35610 36000 36125 36720 36992 37984 38250 38400 39015 39168 40358 40800 41616 42732 43200 43350 43520 45900 46240 47480 48000 48960 51000 52020 53415 54000 54400 55488 56976 57375 57600 57800 58752 59350 60537 61200 62424 64000 64098 65025 65280 68000 69120 69360 71220 72000 72250 73440 73984 75968 76500 78030 78336 80716 81600 83232 85464 86400 86700 89025 91800 92480 94960 96000 97920 100895 102000 104040 106830 108000 108375 108800 110976 113952 114750 115200 115600 117504 118700 121074 122400 124848 128196 130050 130560 136000 138720 142440 144000 144500 146880 147968 148375 151936 153000 156060 160245 161432 163200 166464 170928 172800 173400 178050 181611 183600 184960 189920 192000 195075 195840 201790 204000 208080 213660 216000 216750 217600 221952 227904 229500 231200 235008 237400 242148 244800 249696 256392 260100 267075 272000 277440 284880 288000 289000 293760 296750 302685 303872 306000 312120 320490 322864 325125 326400 332928 341856 343043 345600 346800 356100 363222 367200 369920 379840 390150 391680 403580 408000 416160 427320 432000 433500 443904 445125 455808 459000 462400 474800 484296 489600 499392 504475 512784 520200 534150 544000 544833 554880 569760 576000 578000 587520 593500 605370 607744 612000 624240 640980 645728 650250 652800 665856 683712 686086 693600 712200 726444 734400 739840 759680 780300 801225 807160 816000 832320 854640 864000 867000 890250 908055 911616 918000 924800 949600 968592 975375 979200 998784 1008950 1025568 1029129 1040400 1068300 1088000 1089666 1109760 1139520 1156000 1175040 1187000 1210740 1224000 1248480 1281960 1291456 1300500 1331712 1335375 1367424 1372172 1387200 1408969 1424400 1452888 1468800 1513425 1519360 1560600 1602450 1614320 1632000 1664640 1709280 1715215 1728000 1734000 1780500 1816110 1823232 1836000 1849600 1899200 1937184 1950750 1958400 1997568 2017900 2051136 2058258 2080800 2136600 2179332 2219520 2279040 2312000 2374000 2421480 2448000 2496960 2522375 2563920 2582912 2601000 2670750 2724165 2734848 2744344 2774400 2817938 2848800 2905776 2937600 3026850 3038720 3087387 3121200 3204900 3228640 3264000 3329280 3418560 3430430 3468000 3561000 3632220 3672000 3699200 3798400 3874368 3901500 3995136 4006125 4035800 4102272 4116516 4161600 4226907 4273200 4358664 4540275 4558080 4624000 4748000 4842960 4896000 4993920 5044750 5127840 5145645 5165824 5202000 5341500 5448330 5469696 5488688 5548800 5635876 5697600 5811552 5875200 6053700 6174774 6242400 6409800 6457280 6658560 6837120 6860860 6936000 7044845 7122000 7264440 7344000 7567125 7596800 7748736 7803000 8012250 8071600 8204544 8233032 8323200 8453814 8546400 8576075 8717328 9080550 9116160 9248000 9262161 9496000 9685920 9792000 9987840 10089500 10255680 10291290 10331648 10404000 10683000 10896660 10977376 11097600 11271752 11395200 11623104 12107400 12349548 12484800 12680721 12819600 12914560 13620825 13674240 13721720 13872000 14089690 14244000 14528880 14688000 15134250 15193600 15436935 15497472 15606000 16024500 16143200 16409088 16466064 16646400 16907628 17092800 17152150 17434656 18161100 18496000 18524322 18992000 19371840 19975680 20179000 20511360 20582580 20808000 21134535 21366000 21793320 21954752 22543504 22701375 22790400 23246208 23952473 24214800 24699096 24969600 25361442 25639200 25728225 25829120 27241650 27348480 27443440 27744000 28179380 28488000 29057760 29376000 30268500 30873870 30994944 31212000 32049000 32286400 32932128 33292800 33815256 34185600 34304300 34869312 35224225 36322200 37048644 37984000 38042163 38743680 40358000 41022720 41165160 41616000 42269070 42732000 42880375 43586640 43909504 45087008 45402750 45580800 46310805 46492416 47904946 48429600 49398192 49939200 50722884 51278400 51456450 51658240 54483300 54886880 55488000 56358760 56976000 58115520 60537000 61747740 62424000 63403605 64098000 64572800 65864256 67630512 68104125 68371200 68608600 69738624 70448450 71857419 72644400 74097288 75968000 76084326 77184675 77487360 80716000 82045440 82330320 83232000 84538140 85464000 85760750 87173280 87819008 90174016 90805500 92621610 92984832 95809892 96859200 98796384 99878400 101445768 102556800 102912900 105672675 108966600 109773760 112717520 113952000 116231040 119762365 121074000 123495480 124848000 126807210 128196000 128641125 129145600 131728512 135261024 136208250 136742400 137217200 139477248 140896900 143714838 145288800 148194576 152168652 154369350 154974720 161432000 164660640 166464000 169076280 170928000 171521500 174346560 175638016 176121125 180348032 181611000 185243220 190210815 191619784 193718400 197592768 202891536 205113600 205825800 211345350 215572257 217933200 219547520 225435040 227904000 231554025 232462080 239524730 242148000 246990960 249696000 253614420 256392000 257282250 258291200 263457024 270522048 272416500 274434400 278954496 281793800 287429676 290577600 296389152 304337304 308738700 317018025 322864000 329321280 338152560 341856000 343043000 348693120 352242250 359287095 360696064 363222000 370486440 380421630 383239568 385923375 387436800 395185536 405783072 407192041 410227200 411651600 422690700 431144514 435866400 439095040 450870080 463108050 464924160 479049460 484296000 493981920 499392000 507228840 512784000 514564500 526914048 528363375 541044096 544833000 548868800 563587600 574859352 581155200 592778304 598811825 608674608 617477400 634036050 645728000 646716771 658642560 676305120 683712000 686086000 697386240 704484500 718574190 721392128 726444000 740972880 760843260 766479136 771846750 774873600 790371072 811566144 814384082 823303200 845381400 862289028 871732800 878190080 901740160 926216100 951054075 958098920 968592000 987963840 1014457680 1025568000 1029129000 1056726750 1077861285 1082088192 1089666000 1097737600 1127175200 1149718704 1157770125 1162310400 1185556608 1197623650 1217349216 1221576123 1234954800 1268072100 1291456000 1293433542 1317285120 1352610240 1372172000 1394772480 1408969000 1437148380 1452888000 1481945760 1521686520 1532958272 1543693500 1580742144 1585090125 1623132288 1628768164 1646606400 1672446203 1690762800 1724578056 1743465600 1796435475 1803480320 1852432200 1902108150 1916197840 1937184000 1975927680 2028915360 2035960205 2051136000 2058258000 2113453500 2155722570 2164176384 2179332000 2195475200 2254350400 2299437408 2315540250 2324620800 2371113216 2395247300 2434698432 2443152246 2469909600 2536144200 2586867084 2634570240 2705220480 2744344000 2817938000 2874296760 2905776000 2963891520 2994059125 3043373040 3065916544 3087387000 3170180250 3233583855 3246264576 3257536328 3293212800 3344892406 3381525600 3449156112 3486931200 3592870950 3606960640 3664728369 3704864400 3804216300 3832395680 3874368000 3951855360 4057830720 4071920410 4116516000 4226907000 4311445140 4358664000 4390950400 4508700800 4598874816 4631080500 4742226432 4755270375 4790494600 4869396864 4886304492 4939819200 5017338609 5072288400 5173734168 5389306425 5410440960 5488688000 5635876000 5748593520 5811552000 5927783040 5988118250 6086746080 6107880615 6131833088 6174774000 6340360500 6467167710 6492529152 6515072656 6586425600 6689784812 6763051200 6898312224 6973862400 7185741900 7329456738 7409728800 7608432600 7664791360 7903710720 8115661440 8143840820 8233032000 8362231015 8453814000 8622890280 8717328000 8982177375 9017401600 9197749632 9262161000 9510540750 9580989200 9738793728 9772608984 9879638400 10034677218 10144576800 10179801025 10347468336 10778612850 10820881920 10977376000 10994185107 11271752000 11497187040 11623104000 11855566080 11976236500 12173492160 12215761230 12263666176 12349548000 12680721000 12934335420 13030145312 13172851200 13379569624 13526102400 13796624448 14371483800 14658913476 14819457600 15052015827 15216865200 15329582720 16167919275 16231322880 16287681640 16466064000 16724462030 16907628000 17245780560 17434656000 17964354750 18034803200 18323641845 18395499264 18524322000 19021081500 19161978400 19477587456 19545217968 19759276800 20069354436 20289153600 20359602050 20694936672 21557225700 21954752000 21988370214 22543504000 22994374080 23711132160 23952473000 24346984320 24431522460 24699096000 25086693045 25361442000 25868670840 26060290624 26759139248 26946532125 27052204800 27593248896 28431585451 28742967600 29317826952 29638915200 30104031654 30433730400 30539403075 30659165440 32335838550 32462645760 32575363280 32932128000 33448924060 33815256000 34491561120 34869312000 35928709500 36647283690 36790998528 37048644000 38042163000 38323956800 39090435936 39518553600 40138708872 40578307200 40719204100 41389873344 41811155075 43114451400 43976740428 45087008000 45156047481 45988748160 47904946000 48693968640 48863044920 49398192000 50173386090 50722884000 50899005125 51737341680 52120581248 53518278496 53893064250 54104409600 54970925535 55186497792 56863170902 57485935200 58635653904 59277830400 60208063308 60867460800 61078806150 61318330880 64671677100 65150726560 65864256000 66897848120 67630512000 68983122240 71857419000 73294567380 74097288000 75260079135 76084326000 76647913600 78180871872 80277417744 80839596375 81156614400 81438408200 82779746688 83622310150 85294756353 86228902800 87953480856 90174016000 90312094962 91618209225 91977496320 95809892000 97387937280 97726089840 98796384000 100346772180 101445768000 101798010250 103474683360 104241162496 107036556992 107786128500 109941851070 110372995584 113726341804 114971870400 117271307808 118555660800 120416126616 121734921600 122157612300 125433465225 129343354200 130301453120 133795696240 135261024000 137966244480 142157927255 143714838000 146589134760 148194576000 150520158270 152168652000 152697015375 153295827200 156361743744 160554835488 161679192750 162313228800 162876816400 165559493376 167244620300 170589512706 172457805600 175906961712 180624189924 183236418450 183954992640 191619784000 195452179680 197592768000 200693544360 202891536000 203596020500 206949366720 208482324992 209055775375 214073113984 215572257000 219883702140 225780237405 227452683608 229943740800 234542615616 240832253232 243469843200 244315224600 250866930450 255884269059 258686708400 260602906240 267591392480 270522048000 274854627675 275932488960 284315854510 287429676000 293178269520 296389152000 301040316540 304337304000 305394030750 306591654400 312723487488 321109670976 323358385500 325753632800 331118986752 334489240600 341179025412 344915611200 351813923424 361248379848 366472836900 376300395675 383239568000 390904359360 401387088720 405783072000 407192041000 413898733440 418111550750 426473781765 428146227968 431144514000 439767404280 451560474810 454905367216 458091046125 459887481600 469085231232 481664506464 483336952667 486939686400 488630449200 501733860900 511768538118 517373416800 521205812480 535182784960 549709255350 551864977920 568631709020 574859352000 586356539040 592778304000 602080633080 608674608000 610788061500 625446974976 627167326125 642219341952 646716771000 651507265600 668978481200 682358050824 689831222400 703627846848 710789636275 722496759696 732945673800 752600791350 766479136000 767652807177 781808718720 802774177440 811566144000 814384082000 827797466880 836223101500 852947563530 856292455936 862289028000 879534808560 903120949620 909810734432 916182092250 919774963200 938170462464 963329012928 966673905334 977260898400 1003467721800 1023537076236 1034746833600 1042411624960 1070365569920 1099418510700 1128901187025 1137263418040 1149718704000 1172713078080 1204161266160 1217349216000 1221576123000 1254334652250 1279421345295 1284438683904 1293433542000 1303014531200 1337956962400 1364716101648 1374273138375 1379662444800 1407255693696 1421579272550 1444993519392 1450010858001 1465891347600 1505201582700 1532958272000 1535305614354 1563617437440 1605548354880 1628768164000 1655594933760 1672446203000 1705895127060 1724578056000 1759069617120 1806241899240 1819621468864 1832364184500 1876340924928 1881501978375 1926658025856 1933347810668 1954521796800 2006935443600 2047074152472 2069493667200 2132368908825 2140731139840 2198837021400 2257802374050 2274526836080 2299437408000 2345426156160 2408322532320 2416684763335 2434698432000 2443152246000 2508669304500 2558842690590 2568877367808 2586867084000 2606029062400 2675913924800 2729432203296 2748546276750 2759324889600 2814511387392 2843158545100 2889987038784 2900021716002 2931782695200 3010403165400 3070611228708 3127234874880 3211096709760 3257536328000 3344892406000 3411790254120 3449156112000 3518139234240 3553948181375 3612483798480 3639242937728 3664728369000 3763003956750 3838264035885 3853316051712 3866695621336 3909043593600 4013870887200 4094148304944 4138987334400 4264737817650 4281462279680 4350032574003 4397674042800 4515604748100 4549053672160 4598874816000 4690852312320 4816645064640 4833369526670 4886304492000 5017338609000 5117685381180 5173734168000 5212058124800 5351827849600 5458864406592 5497092553500 5629022774784 5644505935125 5686317090200 5779974077568 5800043432004 5863565390400 6020806330800 6141222457416 6397106726475 6422193419520 6515072656000 6689784812000 6823580508240 6898312224000 7036278468480 7107896362750 7224967596960 7250054290005 7278485875456 7329456738000 7526007913500 7676528071770 7706632103424 7733391242672 7818087187200 8027741774400 8188296609888 8277974668800 8529475635300 8700065148006 8795348085600 9031209496200 9098107344320 9381704624640 9633290129280 9666739053340 9772608984000 10034677218000 10235370762360 10347468336000 10661844544125 10703655699200 10917728813184 10994185107000 11289011870250 11372634180400 11559948155136 11600086864008 11727130780800 12041612661600 12083423816675 12282444914832 12794213452950 12844386839040 13030145312000 13050097722009 13379569624000 13647161016480 13796624448000 14072556936960 14215792725500 14449935193920 14500108580010 14556971750912 14658913476000 15052015827000 15353056143540 15466782485344 15636174374400 16055483548800 16376593219776 17058951270600 17400130296012 17590696171200 18062418992400 18196214688640 19191320179425 19266580258560 19333478106680 19545217968000 20069354436000 20470741524720 20694936672000 21323689088250 21407311398400 21750162870015 21835457626368 21988370214000 22578023740500 22745268360800 23119896310272 23200173728016 23454261561600 24083225323200 24166847633350 24564889829664 25588426905900 26060290624000 26100195444018 26759139248000 27294322032960 28145113873920 28431585451000 28899870387840 29000217160020 29317826952000 30104031654000 30706112287080 30933564970688 31985533632375 32110967097600 32753186439552 34117902541200 34800260592024 35181392342400 36124837984800 36250271450025 36392429377280 38382640358850 38533160517120 38666956213360 39090435936000 40138708872000 40941483049440 41389873344000 42647378176500 43500325740030 43670915252736 43976740428000 45156047481000 45490536721600 46400347456032 46908523123200 48166450646400 48333695266700 49129779659328 51176853811800 52200390888036 53518278496000 54588644065920 56863170902000 57799740775680 58000434320040 58635653904000 60208063308000 60417119083375 61412224574160 61867129941376 63971067264750 64221934195200 65250488610045 65506372879104 68235805082400 69600521184048 70362784684800 72249675969600 72500542900050 72784858754560 76765280717700 77333912426720 78180871872000 80277417744000 81882966098880 85294756353000 87000651480060 87953480856000 90312094962000 90981073443200 92800694912064 95956600897125 96332901292800 96667390533400 98259559318656 102353707623600 104400781776072 107036556992000 108750814350075 109177288131840 113726341804000 115599481551360 116000868640080 117271307808000 120416126616000 120834238166750 122824449148320 123734259882752 127942134529500 130500977220090 131012745758208 136471610164800 139201042368096 140725569369600 144499351939200 145001085800100 153530561435400 154667824853440 160554835488000 163765932197760 170589512706000 174001302960120 175906961712000 180624189924000 181251357250125 181962146886400 185601389824128 191913201794250 192665802585600 193334781066800 196519118637312 204707415247200 208801563552144 217501628700150 218354576263680 227452683608000 232001737280160 234542615616000 240832253232000 241668476333500 245648898296640 247468519765504 255884269059000 261001954440180 272943220329600 278402084736192 288998703878400 290002171600200 307061122870800 309335649706880 321109670976000 326252443050225 327531864395520 341179025412000 348002605920240 351813923424000 361248379848000 362502714500250 363924293772800 371202779648256 383826403588500 386669562133600 393038237274624 409414830494400 417603127104288 435003257400300 454905367216000 464003474560320 481664506464000 483336952667000 491297796593280 511768538118000 522003908880360 543754071750375 545886440659200 556804169472384 577997407756800 580004343200400 614122245741600 618671299413760 652504886100450 655063728791040 682358050824000 696005211840480 703627846848000 722496759696000 725005429000500 742405559296512 767652807177000 773339124267200 818829660988800 835206254208576 870006514800600 909810734432000 928006949120640 963329012928000 966673905334000 982595593186560 1023537076236000 1044007817760720 1087508143500750 1091772881318400 1113608338944768 1160008686400800 1228244491483200 1237342598827520 1305009772200900 1364716101648000 1392010423680960 1444993519392000 1450010858001000 1535305614354000 1546678248534400 1631262215251125 1637659321977600 1670412508417152 1740013029601200 1819621468864000 1856013898241280 1933347810668000 1965191186373120 2047074152472000 2088015635521440 2175016287001500 2227216677889536 2320017372801600 2456488982966400 2610019544401800 2729432203296000 2784020847361920 2889987038784000 2900021716002000 3070611228708000 3093356497068800 3262524430502250 3275318643955200 3340825016834304 3480026059202400 3712027796482560 3866695621336000 4094148304944000 4176031271042880 4350032574003000 4640034745603200 4912977965932800 5220039088803600 5458864406592000 5568041694723840 5800043432004000 6141222457416000 6186712994137600 6525048861004500 6681650033668608 6960052118404800 7733391242672000 8188296609888000 8352062542085760 8700065148006000 9280069491206400 9825955931865600 10440078177607200 11136083389447680 11600086864008000 12282444914832000 13050097722009000 13920104236809600 15466782485344000 16376593219776000 16704125084171520 17400130296012000 18560138982412800 20880156355214400 23200173728016000 24564889829664000 26100195444018000 27840208473619200 30933564970688000 33408250168343040 34800260592024000 41760312710428800 46400347456032000 49129779659328000 52200390888036000 55680416947238400 69600521184048000 83520625420857600 92800694912064000 104400781776072000 139201042368096000 167041250841715200 208801563552144000 278402084736192000 417603127104288000 835206254208576000
- Sum of all divisors σ(n): 3280324334214470400
- Sum of proper divisors (its aliquot sum) s(n): 2445118080005894400
- 835206254208576000 is an abundant number, because the sum of its proper divisors (2445118080005894400) is greater than itself. Its abundance is 1609911825797318400
Bases of 835206254208576000
- Binary: 1011100101110011111110101001110000000100100101101010000000002
- Hexadecimal: 0xB973FA9C0496A00
- Base-36: 6CFRWOAXCAO0
Squares and roots of 835206254208576000
- 835206254208576000 squared (8352062542085760002) is 697569487069120475312111947776000000
- 835206254208576000 cubed (8352062542085760003) is 582614398345197804595057372989335652723326976000000000
-
The
square root of 835206254208576000 is 913896194.4381735963 -
The
cube root of 835206254208576000 is 941740.4957891497
Scales and comparisons
How big is 835206254208576000?- 835,206,254,208,576,000 seconds is equal to 26,556,975,421 years, 13 weeks, 5 days.
-
To count from 1 to 835,206,254,208,576,000 would take you about seventy-nine billion, six hundred seventy million, nine hundred twenty-six thousand, two hundred sixty-three 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 835206254208576000 cubic inches would be around 78478.4 feet tall.
Recreational maths with 835206254208576000
- 835206254208576000 backwards is 000675802452602538
- The number of decimal digits it has is: 18
- The sum of 835206254208576000's digits is 63
- 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 835206254208576000 - Facts about the integer". Numbermatics.com. 2024. Web. 15 May 2024.
APA style:
Numbermatics. (2024). Number 835206254208576000 - Facts about the integer. Retrieved 15 May 2024, from https://numbermatics.com/n/835206254208576000/
Chicago style:
Numbermatics. 2024. "Number 835206254208576000 - Facts about the integer". https://numbermatics.com/n/835206254208576000/
The information we have on file for 835206254208576000 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 835206254208576000, math, Factors of 835206254208576000, curriculum, school, college, exams, university, Prime factorization of 835206254208576000, STEM, science, technology, engineering, physics, economics, calculator, eight hundred thirty-five quadrillion, two hundred six trillion, two hundred fifty-four billion, two hundred eight million, five hundred seventy-six thousand.