23861753256250000
23,861,753,256,250,000 is an even composite number composed of five prime numbers multiplied together.
What does the number 23861753256250000 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 2025 divisors.
23861753256250000 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two thousand and twenty-five divisors.
Prime factorization of 23861753256250000:
24 × 58 × 74 × 132 × 972
(2 × 2 × 2 × 2 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 7 × 7 × 7 × 7 × 13 × 13 × 97 × 97)See below for interesting mathematical facts about the number 23861753256250000 from the Numbermatics database.
Names of 23861753256250000
- Cardinal: 23861753256250000 can be written as Twenty-three quadrillion, eight hundred sixty-one trillion, seven hundred fifty-three billion, two hundred fifty-six million, two hundred fifty thousand.
Scientific notation
- Scientific notation: 2.386175325625 × 1016
Factors of 23861753256250000
Divisors of 23861753256250000
- Number of divisors d(n): 2025
-
Complete list of divisors:
1 2 4 5 7 8 10 13 14 16 20 25 26 28 35 40 49 50 52 56 65 70 80 91 97 98 100 104 112 125 130 140 169 175 182 194 196 200 208 245 250 260 280 325 338 343 350 364 388 392 400 455 485 490 500 520 560 625 637 650 676 679 686 700 728 776 784 845 875 910 970 980 1000 1040 1183 1225 1250 1261 1274 1300 1352 1358 1372 1400 1456 1552 1625 1690 1715 1750 1820 1940 1960 2000 2275 2366 2401 2425 2450 2500 2522 2548 2600 2704 2716 2744 2800 3125 3185 3250 3380 3395 3430 3500 3640 3880 3920 4225 4375 4459 4550 4732 4753 4802 4850 4900 5000 5044 5096 5200 5432 5488 5915 6125 6250 6305 6370 6500 6760 6790 6860 7000 7280 7760 8125 8281 8450 8575 8750 8827 8918 9100 9409 9464 9506 9604 9700 9800 10000 10088 10192 10864 11375 11830 12005 12125 12250 12500 12610 12740 13000 13520 13580 13720 14000 15625 15925 16250 16393 16562 16900 16975 17150 17500 17654 17836 18200 18818 18928 19012 19208 19400 19600 20176 21125 21875 22295 22750 23660 23765 24010 24250 24500 25000 25220 25480 26000 27160 27440 29575 30625 31213 31250 31525 31850 32500 32786 33124 33271 33800 33950 34300 35000 35308 35672 36400 37636 38024 38416 38800 40625 41405 42250 42875 43750 44135 44590 45500 47045 47320 47530 48020 48500 49000 50000 50440 50960 54320 56875 57967 59150 60025 60625 61250 61789 62426 62500 63050 63700 65000 65572 65863 66248 66542 67600 67900 68600 70000 70616 71344 75272 76048 78125 79625 81250 81965 82810 84500 84875 85750 87500 88270 89180 91000 94090 94640 95060 96040 97000 98000 100880 105625 109375 111475 113750 114751 115934 118300 118825 120050 121250 122317 122500 123578 124852 125000 126100 127400 130000 131144 131726 132496 133084 135800 137200 141232 147875 150544 153125 156065 156250 157625 159250 162500 163930 165620 166355 169000 169750 171500 175000 176540 178360 182000 188180 190120 192080 194000 203125 207025 211250 214375 218750 220675 222950 227500 229502 231868 232897 235225 236600 237650 240100 242500 244634 245000 247156 249704 250000 252200 254800 262288 263452 266168 271600 284375 289835 295750 300125 303125 306250 308945 312130 312500 315250 318500 325000 327860 329315 331240 332710 338000 339500 343000 350000 353080 356720 376360 380240 390625 398125 405769 406250 409825 414050 422500 424375 428750 432523 437500 441350 445900 455000 459004 461041 463736 465794 470450 473200 475300 480200 485000 489268 490000 494312 499408 504400 526904 528125 532336 546875 557375 568750 573755 579670 591500 594125 600250 606250 611585 612500 617890 624260 625000 630500 637000 650000 655720 658630 662480 665420 679000 686000 706160 739375 752720 765625 780325 781250 788125 796250 803257 811538 812500 819650 828100 831775 845000 848750 856219 857500 865046 875000 882700 891800 910000 918008 922082 927472 931588 940900 950600 960400 970000 978536 988624 1015625 1035125 1053808 1056250 1071875 1093750 1103375 1114750 1137500 1147510 1159340 1164485 1176125 1183000 1188250 1200500 1212500 1223170 1225000 1235780 1248520 1250000 1261000 1274000 1311440 1317260 1330840 1358000 1421875 1449175 1478750 1500625 1515625 1531250 1544725 1560650 1562500 1576250 1590121 1592500 1606514 1623076 1625000 1639300 1646575 1656200 1663550 1690000 1697500 1712438 1715000 1730092 1750000 1765400 1783600 1836016 1844164 1863176 1881800 1901200 1957072 1990625 2028845 2031250 2049125 2070250 2112500 2121875 2143750 2162615 2187500 2206750 2229500 2275000 2295020 2305205 2318680 2328970 2352250 2366000 2376500 2401000 2425000 2446340 2450000 2471560 2497040 2522000 2634520 2640625 2661680 2734375 2786875 2843750 2868775 2898350 2957500 2970625 3001250 3027661 3031250 3057925 3062500 3089450 3121300 3125000 3152500 3180242 3185000 3213028 3227287 3246152 3250000 3278600 3293150 3312400 3327100 3395000 3424876 3430000 3460184 3530800 3688328 3696875 3726352 3763600 3828125 3901625 3940625 3981250 4016285 4057690 4062500 4098250 4140500 4158875 4225000 4243750 4281095 4287500 4325230 4375000 4413500 4459000 4550000 4590040 4610410 4637360 4657940 4704500 4753000 4802000 4850000 4892680 4943120 5078125 5175625 5269040 5281250 5359375 5468750 5516875 5573750 5622799 5687500 5737550 5796700 5822425 5880625 5915000 5941250 5993533 6002500 6055322 6062500 6115850 6125000 6178900 6242600 6250000 6305000 6360484 6370000 6426056 6454574 6492304 6557200 6586300 6654200 6790000 6849752 6920368 7109375 7245875 7376656 7393750 7503125 7578125 7656250 7723625 7803250 7881250 7950605 7962500 8032570 8115380 8125000 8196500 8232875 8281000 8317750 8450000 8487500 8562190 8575000 8650460 8750000 8827000 8918000 9180080 9220820 9315880 9409000 9506000 9785360 9953125 10144225 10156250 10245625 10351250 10562500 10609375 10718750 10813075 10937500 11033750 11130847 11147500 11245598 11375000 11475100 11526025 11593400 11644850 11761250 11830000 11882500 11987066 12005000 12110644 12125000 12231700 12250000 12357800 12485200 12610000 12720968 12852112 12909148 13172600 13203125 13308400 13699504 13934375 14218750 14343875 14491750 14787500 14853125 15006250 15138305 15156250 15289625 15312500 15447250 15606500 15762500 15901210 15925000 16065140 16136435 16230760 16250000 16393000 16465750 16562000 16635500 16975000 17124380 17150000 17300920 17654000 18441640 18484375 18631760 18818000 19140625 19508125 19703125 19906250 20081425 20288450 20312500 20491250 20702500 20794375 21125000 21218750 21405475 21437500 21626150 21875000 22067500 22261694 22295000 22491196 22591009 22750000 22950200 23052050 23186800 23289700 23522500 23765000 23974132 24010000 24221288 24250000 24463400 24715600 25441936 25818296 25878125 26345200 26406250 26796875 27584375 27868750 28113995 28437500 28687750 28983500 29112125 29403125 29575000 29706250 29967665 30012500 30276610 30312500 30579250 30625000 30894500 31213000 31525000 31802420 31850000 32130280 32272870 32461520 32786000 32931500 33271000 33950000 34248760 34601840 35546875 36229375 36883280 36968750 37515625 37890625 38281250 38618125 39016250 39359593 39406250 39753025 39812500 40162850 40576900 40625000 40982500 41164375 41405000 41588750 41954731 42250000 42437500 42810950 42875000 43252300 43750000 44135000 44523388 44590000 44982392 45182018 45900400 46104100 46579400 47045000 47530000 47948264 48442576 48926800 49765625 50721125 51228125 51636592 51756250 52812500 53046875 53593750 54065375 55168750 55654235 55737500 56227990 56875000 57375500 57630125 57967000 58224250 58806250 59150000 59412500 59935330 60025000 60553220 60625000 61158500 61250000 61789000 62426000 63050000 63604840 64260560 64545740 65863000 66015625 66542000 68497520 69671875 71093750 71719375 72458750 73937500 74265625 75031250 75691525 75781250 76448125 76562500 77236250 77915929 78032500 78719186 78812500 79506050 79625000 80325700 80682175 81153800 81250000 81965000 82328750 82810000 83177500 83909462 84875000 85621900 85750000 86504600 88270000 89046776 89964784 90364036 92208200 92421875 93158800 94090000 95896528 97540625 98515625 99531250 100407125 101442250 102456250 103512500 103971875 105625000 106093750 107027375 107187500 108130750 110337500 111308470 111475000 112455980 112955045 113750000 114751000 115260250 115934000 116448500 117612500 118825000 119870660 120050000 121106440 121250000 122317000 123578000 127209680 129091480 129390625 131726000 132031250 133984375 137921875 139343750 140569975 142187500 143438750 144917500 145560625 147015625 147875000 148531250 149838325 150062500 151383050 151562500 152896250 153125000 154472500 155831858 156065000 157438372 157625000 159012100 159250000 160651400 161364350 162307600 163930000 164657500 166355000 167818924 169750000 171243800 173009200 178093552 180728072 181146875 184416400 184843750 187578125 193090625 195081250 196797965 197031250 198765125 199062500 200814250 202884500 204912500 205821875 207025000 207943750 209773655 211250000 212187500 214054750 214375000 216261500 220675000 222616940 222950000 224911960 225910090 229502000 230520500 232897000 235225000 237650000 239741320 242212880 244634000 248828125 253605625 256140625 258182960 258781250 264062500 265234375 267968750 270326875 275843750 278271175 278687500 281139950 284375000 286877500 288150625 289835000 291121250 293683117 294031250 295750000 297062500 299676650 300125000 302766100 303125000 305792500 306250000 308945000 311663716 312130000 314876744 315250000 318024200 321302800 322728700 329315000 332710000 335637848 342487600 348359375 358596875 361456144 362293750 369687500 371328125 375156250 378457625 382240625 386181250 389579645 390162500 393595930 394062500 397530250 398125000 401628500 403410875 405769000 409825000 411643750 414050000 415887500 419547310 424375000 428109500 428750000 432523000 441350000 445233880 449823920 451820180 461041000 462109375 465794000 470450000 479482640 487703125 492578125 497656250 502035625 507211250 512281250 517562500 519859375 528125000 530468750 535136875 535937500 540653750 545411503 551687500 556542350 557375000 562279900 564775225 568750000 573755000 576301250 579670000 582242500 587366234 588062500 594125000 599353300 600250000 605532200 606250000 611585000 617890000 623327432 629753488 636048400 645457400 646953125 658630000 671275696 689609375 696718750 702849875 717193750 724587500 727803125 735078125 739375000 742656250 749191625 750312500 756915250 764481250 772362500 779159290 780325000 787191860 788125000 795060500 796250000 803257000 806821750 811538000 819650000 823287500 831775000 839094620 848750000 856219000 865046000 890467760 903640360 905734375 922082000 924218750 937890625 965453125 975406250 983989825 985156250 993825625 995312500 1004071250 1014422500 1024562500 1029109375 1035125000 1039718750 1048868275 1056250000 1060937500 1070273750 1071875000 1081307500 1090823006 1103375000 1113084700 1114750000 1124559800 1129550450 1147510000 1152602500 1164485000 1174732468 1176125000 1188250000 1198706600 1211064400 1223170000 1246654864 1268028125 1280703125 1290914800 1293906250 1351634375 1379218750 1391355875 1393437500 1405699750 1434387500 1440753125 1449175000 1455606250 1468415585 1470156250 1478750000 1485312500 1498383250 1500625000 1513830500 1528962500 1544725000 1558318580 1560650000 1574383720 1576250000 1590121000 1606514000 1613643500 1646575000 1663550000 1678189240 1712438000 1741796875 1792984375 1807280720 1811468750 1848437500 1856640625 1875781250 1892288125 1911203125 1930906250 1947898225 1950812500 1967979650 1970312500 1987651250 1990625000 2008142500 2017054375 2028845000 2049125000 2058218750 2070250000 2079437500 2097736550 2121875000 2140547500 2143750000 2162615000 2181646012 2206750000 2226169400 2249119600 2259100900 2305205000 2328970000 2349464936 2352250000 2397413200 2438515625 2510178125 2536056250 2561406250 2587812500 2599296875 2675684375 2703268750 2727057515 2758437500 2782711750 2786875000 2811399500 2823876125 2868775000 2881506250 2898350000 2911212500 2936831170 2940312500 2970625000 2996766500 3001250000 3027661000 3057925000 3089450000 3116637160 3148767440 3180242000 3227287000 3234765625 3293150000 3356378480 3448046875 3483593750 3514249375 3585968750 3622937500 3639015625 3675390625 3696875000 3713281250 3745958125 3751562500 3784576250 3817880521 3822406250 3861812500 3895796450 3901625000 3935959300 3940625000 3975302500 3981250000 4016285000 4034108750 4057690000 4098250000 4116437500 4158875000 4195473100 4243750000 4281095000 4325230000 4363292024 4452338800 4518201800 4528671875 4610410000 4698929872 4827265625 4877031250 4919949125 4969128125 5020356250 5072112500 5122812500 5145546875 5175625000 5198593750 5244341375 5351368750 5406537500 5454115030 5516875000 5565423500 5573750000 5622799000 5647752250 5737550000 5763012500 5822425000 5873662340 5880625000 5941250000 5993533000 6055322000 6115850000 6233274320 6340140625 6403515625 6454574000 6469531250 6758171875 6896093750 6956779375 6967187500 7028498750 7171937500 7203765625 7245875000 7278031250 7342077925 7350781250 7393750000 7426562500 7491916250 7503125000 7569152500 7635761042 7644812500 7723625000 7791592900 7803250000 7871918600 7881250000 7950605000 8032570000 8068217500 8232875000 8317750000 8390946200 8562190000 8726584048 8964921875 9036403600 9057343750 9461440625 9556015625 9654531250 9739491125 9754062500 9839898250 9938256250 10040712500 10085271875 10144225000 10245625000 10291093750 10351250000 10397187500 10488682750 10702737500 10813075000 10908230060 11033750000 11130847000 11245598000 11295504500 11526025000 11644850000 11747324680 11761250000 11987066000 12192578125 12550890625 12680281250 12807031250 12939062500 12996484375 13378421875 13516343750 13635287575 13792187500 13913558750 13934375000 14056997500 14119380625 14343875000 14407531250 14491750000 14556062500 14684155850 14701562500 14853125000 14983832500 15006250000 15138305000 15271522084 15289625000 15447250000 15583185800 15743837200 15901210000 16136435000 16465750000 16781892400 17571246875 17929843750 18114687500 18195078125 18729790625 18922881250 19089402605 19112031250 19309062500 19478982250 19508125000 19679796500 19876512500 20081425000 20170543750 20288450000 20491250000 20582187500 20794375000 20977365500 21405475000 21626150000 21816460120 22261694000 22591009000 22643359375 23052050000 23494649360 24136328125 24385156250 24599745625 24845640625 25101781250 25360562500 25614062500 25727734375 25878125000 25992968750 26221706875 26756843750 27032687500 27270575150 27584375000 27827117500 27868750000 28113995000 28238761250 28687750000 28815062500 29112125000 29368311700 29403125000 29706250000 29967665000 30276610000 30543044168 30579250000 31166371600 31700703125 32272870000 33790859375 34783896875 35142493750 35859687500 36018828125 36229375000 36390156250 36710389625 37459581250 37845762500 38178805210 38224062500 38618125000 38957964500 39016250000 39359593000 39753025000 40162850000 40341087500 41164375000 41588750000 41954731000 42810950000 43632920240 44824609375 45182018000 45286718750 47307203125 47780078125 48272656250 48697455625 48770312500 49199491250 49691281250 50203562500 50426359375 50721125000 51228125000 51455468750 51756250000 51985937500 52443413750 53513687500 54065375000 54541150300 55168750000 55654235000 56227990000 56477522500 57630125000 58224250000 58736623400 58806250000 59935330000 61086088336 62754453125 63401406250 66892109375 67581718750 68176437875 69567793750 70284987500 70596903125 71719375000 72037656250 72458750000 72780312500 73420779250 74919162500 75691525000 76357610420 76448125000 77236250000 77915929000 78719186000 79506050000 80682175000 82328750000 83909462000 87856234375 89649218750 90573437500 90975390625 93648953125 94614406250 95447013025 95560156250 96545312500 97394911250 97540625000 98398982500 99382562500 100407125000 100852718750 101442250000 102456250000 102910937500 103971875000 104886827500 107027375000 108130750000 109082300600 111308470000 112955045000 115260250000 117473246800 122998728125 124228203125 125508906250 126802812500 131108534375 133784218750 135163437500 136352875750 139135587500 140569975000 141193806250 143438750000 144075312500 145560625000 146841558500 149838325000 151383050000 152715220840 152896250000 155831858000 158503515625 161364350000 168954296875 173919484375 175712468750 179298437500 180094140625 181146875000 181950781250 183551948125 187297906250 189228812500 190894026050 191120312500 193090625000 194789822500 195081250000 196797965000 198765125000 200814250000 201705437500 205821875000 207943750000 209773655000 214054750000 218164601200 225910090000 236536015625 243487278125 245997456250 248456406250 251017812500 252131796875 253605625000 262217068750 267568437500 270326875000 272705751500 278271175000 281139950000 282387612500 288150625000 291121250000 293683117000 299676650000 305430441680 313772265625 317007031250 334460546875 337908593750 340882189375 347838968750 351424937500 352984515625 358596875000 360188281250 362293750000 363901562500 367103896250 374595812500 378457625000 381788052100 382240625000 386181250000 389579645000 393595930000 397530250000 403410875000 411643750000 419547310000 439281171875 468244765625 473072031250 477235065125 486974556250 491994912500 496912812500 502035625000 504263593750 507211250000 524434137500 535136875000 540653750000 545411503000 556542350000 564775225000 576301250000 587366234000 614993640625 621141015625 627544531250 634014062500 655542671875 668921093750 675817187500 681764378750 695677937500 702849875000 705969031250 717193750000 720376562500 727803125000 734207792500 749191625000 756915250000 763576104200 764481250000 779159290000 806821750000 869597421875 878562343750 917759740625 936489531250 946144062500 954470130250 973949112500 983989825000 993825625000 1004071250000 1008527187500 1048868275000 1070273750000 1090823006000 1129550450000 1182680078125 1217436390625 1229987281250 1242282031250 1255089062500 1260658984375 1268028125000 1311085343750 1337842187500 1351634375000 1363528757500 1391355875000 1405699750000 1411938062500 1440753125000 1455606250000 1468415585000 1498383250000 1527152208400 1704410946875 1739194843750 1757124687500 1764922578125 1835519481250 1872979062500 1892288125000 1908940260500 1947898225000 1967979650000 1987651250000 2017054375000 2097736550000 2196405859375 2341223828125 2365360156250 2386175325625 2434872781250 2459974562500 2484564062500 2510178125000 2521317968750 2536056250000 2622170687500 2675684375000 2703268750000 2727057515000 2782711750000 2823876125000 2881506250000 2936831170000 3074968203125 3277713359375 3408821893750 3478389687500 3514249375000 3529845156250 3671038962500 3745958125000 3784576250000 3817880521000 3895796450000 4034108750000 4347987109375 4392811718750 4588798703125 4682447656250 4730720312500 4772350651250 4869745562500 4919949125000 4969128125000 5020356250000 5042635937500 5244341375000 5351368750000 5454115030000 5647752250000 6087181953125 6149936406250 6555426718750 6817643787500 6956779375000 7028498750000 7059690312500 7342077925000 7491916250000 7635761042000 8522054734375 8695974218750 8785623437500 8824612890625 9177597406250 9364895312500 9461440625000 9544701302500 9739491125000 9839898250000 9938256250000 10085271875000 10488682750000 11930876628125 12174363906250 12299872812500 13110853437500 13635287575000 13913558750000 14119380625000 14684155850000 15374841015625 16388566796875 17044109468750 17391948437500 17571246875000 17649225781250 18355194812500 18729790625000 18922881250000 19089402605000 19478982250000 20170543750000 22943993515625 23861753256250 24348727812500 24599745625000 26221706875000 27270575150000 28238761250000 30435909765625 30749682031250 32777133593750 34088218937500 34783896875000 35142493750000 35298451562500 36710389625000 37459581250000 38178805210000 42610273671875 45887987031250 47723506512500 48697455625000 49199491250000 52443413750000 59654383140625 60871819531250 61499364062500 65554267187500 68176437875000 69567793750000 70596903125000 73420779250000 85220547343750 91775974062500 95447013025000 97394911250000 114719967578125 119308766281250 121743639062500 122998728125000 131108534375000 136352875750000 141193806250000 170441094687500 183551948125000 190894026050000 213051368359375 229439935156250 238617532562500 243487278125000 245997456250000 262217068750000 298271915703125 340882189375000 367103896250000 426102736718750 458879870312500 477235065125000 486974556250000 596543831406250 681764378750000 852205473437500 917759740625000 954470130250000 1193087662812500 1491359578515625 1704410946875000 1835519481250000 2386175325625000 2982719157031250 3408821893750000 4772350651250000 5965438314062500 11930876628125000 23861753256250000
- Sum of all divisors σ(n): 73763108723015091
- Sum of proper divisors (its aliquot sum) s(n): 49901355466765091
- 23861753256250000 is an abundant number, because the sum of its proper divisors (49901355466765091) is greater than itself. Its abundance is 26039602210515091
Bases of 23861753256250000
- Binary: 10101001100011000100011010111101000111010001010100100002
- Hexadecimal: 0x54C6235E8E8A90
- Base-36: 6IYAA44K51S
Squares and roots of 23861753256250000
- 23861753256250000 squared (238617532562500002) is 569383268462157478164062500000000
- 23861753256250000 cubed (238617532562500003) is 13586483060281154134481606631103515625000000000000
-
23861753256250000 is a
perfect square number . Itssquare root is 154472500 -
The
cube root of 23861753256250000 is 287894.9963475157
Scales and comparisons
How big is 23861753256250000?- 23,861,753,256,250,000 seconds is equal to 758,729,944 years, 15 weeks, 4 days, 2 hours, 46 minutes, 40 seconds.
-
To count from 1 to 23,861,753,256,250,000 would take you about two billion, two hundred seventy-six million, one hundred eighty-nine thousand, eight hundred thirty-two 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 23861753256250000 cubic inches would be around 23991.2 feet tall.
Recreational maths with 23861753256250000
- 23861753256250000 backwards is 00005265235716832
- The number of decimal digits it has is: 17
- The sum of 23861753256250000's digits is 55
- 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 23861753256250000 - Facts about the integer". Numbermatics.com. 2024. Web. 30 May 2024.
APA style:
Numbermatics. (2024). Number 23861753256250000 - Facts about the integer. Retrieved 30 May 2024, from https://numbermatics.com/n/23861753256250000/
Chicago style:
Numbermatics. 2024. "Number 23861753256250000 - Facts about the integer". https://numbermatics.com/n/23861753256250000/
The information we have on file for 23861753256250000 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 23861753256250000, math, Factors of 23861753256250000, curriculum, school, college, exams, university, Prime factorization of 23861753256250000, STEM, science, technology, engineering, physics, economics, calculator, twenty-three quadrillion, eight hundred sixty-one trillion, seven hundred fifty-three billion, two hundred fifty-six million, two hundred fifty thousand.