209747643560000
209,747,643,560,000 is an even composite number composed of eight prime numbers multiplied together.
209747643560000 is an even composite number. It is composed of eight distinct prime numbers multiplied together. It has a total of two thousand, two hundred forty divisors.
Prime factorization of 209747643560000:
26 × 54 × 7 × 13 × 17 × 61 × 181 × 307
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 5 × 5 × 7 × 13 × 17 × 61 × 181 × 307)See below for interesting mathematical facts about the number 209747643560000 from the Numbermatics database.
Names of 209747643560000
- Cardinal: 209747643560000 can be written as Two hundred nine trillion, seven hundred forty-seven billion, six hundred forty-three million, five hundred sixty thousand.
Scientific notation
- Scientific notation: 2.0974764356 × 1014
Factors of 209747643560000
Divisors of 209747643560000
- Number of divisors d(n): 2240
-
Complete list of divisors:
1 2 4 5 7 8 10 13 14 16 17 20 25 26 28 32 34 35 40 50 52 56 61 64 65 68 70 80 85 91 100 104 112 119 122 125 130 136 140 160 170 175 181 182 200 208 221 224 238 244 250 260 272 280 305 307 320 325 340 350 362 364 400 416 425 427 442 448 455 476 488 500 520 544 560 595 610 614 625 650 680 700 724 728 793 800 832 850 854 875 884 905 910 952 976 1000 1037 1040 1088 1105 1120 1190 1220 1228 1250 1267 1300 1360 1400 1448 1456 1525 1535 1547 1586 1600 1625 1700 1708 1750 1768 1810 1820 1904 1952 2000 2074 2080 2125 2135 2149 2210 2240 2275 2353 2380 2440 2456 2500 2534 2600 2720 2800 2896 2912 2975 3050 3070 3077 3094 3172 3250 3400 3416 3500 3536 3620 3640 3808 3904 3965 3991 4000 4148 4160 4250 4270 4298 4375 4420 4525 4550 4706 4760 4880 4912 5000 5068 5185 5200 5219 5440 5525 5551 5600 5792 5824 5950 6100 6140 6154 6188 6335 6344 6500 6800 6832 7000 7072 7240 7259 7280 7616 7625 7675 7735 7930 7982 8000 8125 8296 8500 8540 8596 8750 8840 9050 9100 9412 9520 9760 9824 10000 10136 10370 10400 10438 10625 10675 10745 11041 11050 11102 11200 11375 11584 11765 11900 12200 12280 12308 12376 12670 12688 13000 13481 13600 13664 14000 14144 14480 14518 14560 14875 15250 15350 15385 15470 15860 15964 16250 16471 16592 17000 17080 17192 17500 17680 18100 18200 18727 18824 19040 19520 19648 19825 19955 20000 20272 20740 20800 20876 21250 21350 21490 21539 22082 22100 22204 22625 22750 23530 23800 24400 24560 24616 24752 25340 25376 25925 26000 26095 26962 27200 27328 27625 27755 27937 28000 28960 29036 29120 29750 30500 30700 30770 30940 31675 31720 31928 32500 32942 33184 34000 34160 34384 35000 35360 36200 36295 36400 36533 37454 37648 38080 38125 38375 38675 39650 39910 40000 40001 40544 41480 41752 42500 42700 42980 43078 44164 44200 44408 45250 45500 47060 47600 48800 49120 49232 49504 50680 50752 51850 52000 52190 53375 53725 53924 55205 55250 55510 55567 55874 56000 56875 57920 58072 58825 59500 61000 61400 61540 61880 63350 63440 63856 65000 65884 66368 67405 67847 68000 68320 68768 70000 70720 72400 72590 72800 73066 74375 74908 75296 76250 76750 76925 77287 77350 79300 79820 80002 81088 82355 82960 83504 85000 85400 85960 86156 88328 88400 88816 90500 91000 93635 94120 94367 95200 97600 98240 98464 99008 99125 99775 101360 103700 104000 104380 106750 107450 107695 107848 110410 110500 111020 111134 111748 113125 113750 116144 117650 119000 122000 122800 123080 123760 126700 126880 127712 129625 130000 130475 131089 131768 134810 135694 136000 136640 137536 138125 138775 139685 140000 143533 144800 145180 145600 146132 148750 149816 150592 152500 153500 153850 154574 154700 158375 158600 159640 160004 164710 165920 167008 170000 170800 171920 172312 176656 176800 177632 181000 181475 182000 182665 187270 187697 188240 188734 190400 191875 193375 196928 198250 199550 200005 202720 207400 208760 213500 214900 215390 215696 220820 221000 222040 222268 223496 226250 227500 232288 235300 238000 243451 244000 245600 246160 247520 253400 253760 255424 259250 260000 260950 262178 263536 266875 268625 269620 271388 276025 276250 277550 277835 279370 280000 280007 287066 289600 290360 292264 294125 297500 299632 305000 307000 307700 309148 309400 316750 317200 318359 319280 320008 329420 331840 334016 337025 339235 340000 341600 343840 344624 353312 353600 355264 362000 362950 364000 365330 374540 375394 376480 377468 383750 384625 386435 386750 388969 396500 399100 400010 405440 411775 414800 417520 427000 429800 430780 431392 441640 442000 444080 444536 446992 452500 455000 464576 468175 470600 471835 474929 476000 486902 488000 491200 492320 495040 495625 498875 506800 518500 520000 521900 524356 527072 533750 537250 538475 539240 542776 552050 552500 555100 555670 558740 560014 574132 580720 584528 588250 595000 599264 610000 614000 615400 618296 618800 633500 634400 636718 638560 640016 648125 652375 655445 658840 674050 678470 680000 683200 687680 689248 693875 698425 706624 717665 722371 724000 725900 728000 730660 749080 750788 752960 754936 767500 769250 772870 773500 777938 791875 793000 798200 800020 823550 829600 835040 854000 859600 861560 862784 883280 884000 888160 889072 893984 905000 907375 910000 913325 936350 938485 941200 943670 944639 949858 952000 966875 973804 984640 991250 997750 1000025 1004731 1013600 1037000 1043800 1048712 1054144 1067500 1074500 1076950 1078480 1085552 1104100 1105000 1110200 1111340 1117480 1120028 1148264 1161440 1169056 1176500 1190000 1198528 1217255 1220000 1228000 1230800 1236592 1237600 1267000 1268800 1273436 1277120 1280032 1296250 1304750 1310890 1313879 1317680 1343125 1348100 1356940 1378496 1380125 1387750 1389175 1396850 1400035 1435330 1444742 1448000 1451800 1461320 1470625 1498160 1501576 1509872 1535000 1538500 1545740 1547000 1555876 1583750 1586000 1591795 1596400 1600040 1647100 1659200 1670080 1685125 1696175 1704157 1708000 1719200 1723120 1766560 1768000 1776320 1778144 1787968 1810000 1814750 1820000 1826650 1872700 1876970 1882400 1887340 1889278 1899716 1923125 1932175 1933750 1944845 1947608 1982500 1995500 2000050 2009462 2027200 2058875 2074000 2087600 2097424 2135000 2149000 2153900 2156960 2171104 2208200 2210000 2220400 2222680 2228513 2234960 2240056 2296528 2322880 2338112 2340875 2353000 2359175 2374645 2380000 2434510 2440000 2440061 2456000 2461600 2473184 2475200 2494375 2534000 2546872 2560064 2592500 2609500 2621780 2627758 2635360 2686250 2692375 2696200 2713880 2760250 2775500 2778350 2793700 2800070 2870660 2889484 2903600 2922640 2941250 2996320 3003152 3019744 3070000 3077000 3091480 3094000 3111752 3167500 3172000 3183590 3192800 3200080 3261875 3277225 3294200 3370250 3389587 3392350 3408314 3416000 3438400 3446240 3469375 3492125 3533120 3556288 3588325 3611855 3620000 3629500 3640000 3653300 3745400 3753940 3764800 3774680 3778556 3799432 3846250 3864350 3867500 3889690 3895216 3965000 3991000 4000100 4018924 4117750 4138667 4148000 4175200 4194848 4270000 4298000 4307800 4313920 4342208 4416400 4420000 4440800 4445360 4457026 4469920 4480112 4536875 4566625 4593056 4681750 4692425 4706000 4718350 4723195 4749290 4760000 4869020 4880122 4923200 4946368 4988750 5000125 5023655 5056597 5068000 5093744 5185000 5219000 5243560 5255516 5270720 5372500 5384750 5392400 5427760 5520500 5551000 5556700 5587400 5600140 5741320 5778968 5807200 5845280 5882500 5992640 6006304 6039488 6086275 6140000 6154000 6182960 6188000 6223504 6335000 6344000 6367180 6385600 6400160 6523750 6554450 6569395 6588400 6612473 6740500 6779174 6784700 6816628 6892480 6900625 6938750 6945875 6984250 7000175 7176650 7223710 7240000 7259000 7306600 7490800 7507880 7549360 7557112 7598864 7692500 7728700 7735000 7779380 7790432 7930000 7958975 7982000 8000200 8037848 8235500 8277334 8296000 8350400 8389696 8425625 8480875 8520785 8540000 8596000 8615600 8832800 8840000 8881600 8890720 8914052 8939840 8960224 9073750 9133250 9186112 9363500 9384850 9412000 9436700 9446390 9498580 9660875 9724225 9738040 9760244 9977500 10000250 10047310 10113194 10136000 10187488 10294375 10370000 10438000 10487120 10511032 10745000 10769500 10784800 10855520 11041000 11102000 11113400 11142565 11174800 11200280 11482640 11557936 11614400 11690560 11704375 11765000 11795875 11873225 12012608 12172550 12200305 12280000 12280307 12308000 12365920 12376000 12447008 12670000 12734360 12800320 13047500 13108900 13138790 13176800 13224946 13461875 13481000 13558348 13569400 13633256 13801250 13877500 13891750 13968500 14000350 14353300 14447420 14518000 14613200 14981600 15015760 15098720 15114224 15197728 15385000 15457400 15470000 15558760 15580864 15860000 15917950 15964000 16000400 16075696 16386125 16471000 16554668 16851250 16947935 16961750 17041570 17080000 17080427 17192000 17231200 17460625 17665600 17781440 17828104 17920448 17941625 18059275 18147500 18266500 18727000 18769700 18824000 18873400 18892780 18997160 19321750 19448450 19476080 19520488 19955000 20000500 20094620 20226388 20374976 20588750 20693335 20740000 20876000 20974240 21022064 21490000 21539000 21569600 21711040 22082000 22204000 22226800 22285130 22349600 22400560 22833125 22965280 23115872 23408750 23462125 23530000 23591750 23615975 23727109 23746450 24345100 24400610 24560614 24616000 24731840 24894016 25000625 25118275 25282985 25340000 25468720 26095000 26217800 26277580 26353600 26449892 26923750 26962000 27116696 27138800 27266512 27602500 27755000 27783500 27937000 28000700 28706600 28894840 28970669 29036000 29226400 29963200 30031520 30197440 30228448 30395456 30431375 30770000 30914800 30940000 31117520 31720000 31835900 31928000 32000800 32151392 32772250 32846975 32942000 33062365 33109336 33702500 33895870 33923500 34083140 34160854 34462400 34729375 34921250 35000875 35656208 35883250 36118550 36295000 36533000 37454000 37539400 37746800 37785560 37994320 38643500 38896900 38952160 39040976 39794875 39910000 40001000 40189240 40452776 41177500 41386670 41480000 41752000 41948480 42044128 42404375 42603925 42980000 43078000 44064631 44164000 44408000 44453600 44570260 44699200 44801120 45666250 45930560 46231744 46817500 46924250 47060000 47183500 47231950 47454218 47492900 48304375 48621125 48690200 48801220 49121228 50001250 50236550 50565970 50680000 50937440 52190000 52435600 52555160 52899784 53847500 53924000 54233392 54277600 54533024 55205000 55510000 55567000 55712825 55874000 56001400 57413200 57622979 57789680 57941338 58072000 58452800 58979375 59366125 60063040 60456896 60862750 61001525 61401535 61540000 61829600 61880000 62235040 63671800 64001600 64302784 65544500 65693950 65884000 66124730 66218672 67405000 67791740 67847000 68166280 68321708 69458750 69842500 70001750 71312416 71766500 72237100 72590000 73066000 74908000 75078800 75493600 75571120 75988640 77287000 77793800 77904320 78081952 79589750 79820000 80002000 80378480 80905552 81930625 82355000 82773340 84088256 84739675 84808750 85207850 85402135 85960000 85962149 86156000 88129262 88328000 88907200 89140520 89602240 89708125 90296375 91332500 93635000 93848500 94120000 94367000 94463900 94908436 94985800 96608750 97242250 97380400 97602440 98242456 100002500 100473100 101131940 101874880 103466675 104380000 104871200 105110320 105799568 107695000 107848000 108466784 108555200 109066048 110410000 111020000 111134000 111425650 111748000 112002800 114826400 115245958 115579360 115882676 117310625 117958750 118079875 118635545 118732250 121725500 122003050 122803070 123080000 123659200 124470080 125591375 126414925 127343600 131089000 131387900 131768000 132249460 132437344 134810000 135583480 135694000 136332560 136643416 138917500 139685000 140003500 142624832 143533000 144474200 144853345 145180000 146132000 149816000 150157600 150987200 151142240 151977280 152156875 154574000 155587600 156163904 159179500 159640000 160004000 160756960 161811104 163861250 164234875 164710000 165311825 165546680 169479350 169617500 170415700 170804270 171924298 172312000 175004375 176258524 178281040 179416250 180592750 182665000 187270000 187697000 188734000 188927800 189816872 189971600 193217500 194484500 194760800 195204880 196484912 198974375 200005000 200946200 202263880 206933350 208760000 209742400 210220640 211599136 213019625 215390000 216933568 220323155 220820000 222040000 222268000 222851300 223496000 224005600 229652800 230491916 231158720 231765352 234621250 235917500 236159750 237271090 237464500 243105625 243451000 244006100 245606140 251182750 252829850 254687200 262178000 262775800 264498920 264874688 269620000 271166960 271388000 272665120 273286832 277835000 278564125 279370000 280007000 287066000 288114895 288948400 289706690 290360000 292264000 296830625 300315200 302284480 304313750 305007625 307007675 308452417 309148000 311175200 318359000 320008000 321513920 323622208 327722500 328469750 329420000 330623650 331093360 338958700 339235000 340831400 341608540 343848596 350008750 352517048 356562080 358832500 361185500 365330000 374540000 375394000 377468000 377855600 379633744 379943200 386435000 388969000 389521600 390409760 392969824 397948750 400010000 401892400 403360853 404527760 413866700 420441280 423198272 423698375 426039250 427010675 429810745 430780000 440646310 441640000 444536000 445702600 448011200 451481875 460983832 463530704 469242500 471835000 472319500 474542180 474929000 486211250 486902000 488012200 491212280 502365500 505659700 509374400 517333375 524356000 525551600 528997840 539240000 542333920 542776000 545330240 546573664 555670000 557128250 558740000 560014000 574132000 576229790 577896800 579413380 590399375 593177725 593661250 608627500 610015250 614015350 616904834 618296000 622350400 627956875 632074625 636718000 655445000 656939500 658840000 661247300 662186720 677917400 678470000 681662800 683217080 687697192 700017500 705034096 713124160 717665000 722371000 724266725 730660000 749080000 749098727 750788000 754936000 755711200 759267488 759886400 772870000 777938000 780819520 785939648 795897500 800020000 803784800 806721706 809055520 821174375 826559125 827733400 847396750 852078500 854021350 859621490 861560000 881292620 891405200 902963750 921967664 927061408 938485000 943670000 944639000 949084360 949858000 972422500 973804000 976024400 982424560 1004731000 1011319400 1034666750 1048712000 1051103200 1057995680 1065098125 1084667840 1093147328 1101615775 1111340000 1114256500 1117480000 1120028000 1148264000 1152459580 1155793600 1158826760 1180798750 1186355450 1187322500 1217255000 1220030500 1228030700 1233809668 1255913750 1264149250 1273436000 1310890000 1313879000 1322494600 1324373440 1355834800 1356940000 1363325600 1366434160 1375394384 1392820625 1400035000 1410068192 1435330000 1440574475 1444742000 1448533450 1461320000 1498197454 1501576000 1511422400 1518534976 1525038125 1535038375 1542262085 1545740000 1555876000 1591795000 1600040000 1607569600 1613443412 1618111040 1642348750 1653118250 1655466800 1694793500 1704157000 1708042700 1719242980 1762585240 1782810400 1805927500 1843935328 1854122816 1876970000 1887340000 1889278000 1898168720 1899716000 1944845000 1947608000 1952048800 1964849120 2009462000 2016804265 2022638800 2069333500 2102206400 2115991360 2118491875 2130196250 2135053375 2149053725 2203231550 2222680000 2228513000 2240056000 2304919160 2317653520 2361597500 2372710900 2374645000 2434510000 2440061000 2456061400 2467619336 2511827500 2528298500 2546872000 2586666875 2621780000 2627758000 2644989200 2711669600 2713880000 2726651200 2732868320 2750788768 2785641250 2800070000 2820136384 2870660000 2881148950 2889484000 2897066900 2965888625 2996394908 3050076250 3070076750 3084524170 3091480000 3111752000 3160373125 3183590000 3226886824 3284697500 3306236500 3310933600 3389587000 3408314000 3416085400 3438485960 3525170480 3565620800 3611855000 3621333625 3687870656 3745493635 3753940000 3774680000 3778556000 3796337440 3799432000 3889690000 3904097600 3929698240 4018924000 4033608530 4045277600 4132795625 4138667000 4236983750 4260392500 4270106750 4298107450 4406463100 4457026000 4609838320 4635307040 4723195000 4745421800 4749290000 4869020000 4880122000 4912122800 4935238672 5023655000 5056597000 5173333750 5243560000 5243691089 5255516000 5289978400 5423339200 5465736640 5501577536 5508078875 5571282500 5600140000 5741320000 5762297900 5778968000 5794133800 5931777250 5992789816 6100152500 6140153500 6169048340 6320746250 6367180000 6453773648 6569395000 6612473000 6621867200 6779174000 6816628000 6832170800 6876971920 7050340960 7202872375 7223710000 7242667250 7490987270 7507880000 7557112000 7592674880 7675191875 7711310425 7779380000 8037848000 8067217060 8090555200 8265591250 8277334000 8473967500 8520785000 8540213500 8596214900 8812926200 8914052000 9219676640 9270614080 9446390000 9490843600 9498580000 9738040000 9760244000 9824245600 9870477344 10047310000 10084021325 10113194000 10346667500 10487382178 10511032000 10579956800 10675266875 10745268625 11016157750 11142565000 11200280000 11524595800 11588267600 11863554500 11985579632 12200305000 12280307000 12338096680 12641492500 12734360000 12907547296 13138790000 13224946000 13558348000 13633256000 13664341600 13753943840 14100681920 14405744750 14447420000 14485334500 14829443125 14981974540 15350383750 15422620850 15558760000 16134434120 16531182500 16554668000 16947935000 17041570000 17080427000 17192429800 17625852400 17828104000 18106668125 18439353280 18727468175 18892780000 18981687200 18997160000 19520488000 19648491200 19740954688 20094620000 20168042650 20226388000 20693335000 20974764356 21350533750 21490537250 22032315500 22285130000 23049191600 23176535200 23727109000 23971159264 24400610000 24560614000 24676193360 25282985000 25815094592 26218455445 26277580000 26449892000 27116696000 27328683200 27507887680 27540394375 28811489500 28894840000 28970669000 29658886250 29963949080 30700767500 30845241700 32268868240 33062365000 33109336000 33895870000 34083140000 34160854000 34384859600 35251704800 36014361875 36213336250 37454936350 37785560000 37963374400 38556552125 40189240000 40336085300 40452776000 41386670000 41949528712 42701067500 42981074500 44064631000 44570260000 46098383200 46353070400 47454218000 47942318528 48801220000 49121228000 49352386720 50420106625 50565970000 52436910890 52555160000 52899784000 53726343125 55080788750 57622979000 57941338000 59317772500 59927898160 61401535000 61690483400 64537736480 66124730000 67791740000 68166280000 68321708000 68769719200 70503409600 72028723750 72426672500 74909872700 77113104250 80672170600 82773340000 83899057424 85402135000 85962149000 88129262000 89140520000 92196766400 93637340875 94908436000 97602440000 98242456000 98704773440 100840213250 101131940000 104873821780 107452686250 110161577500 115245958000 115882676000 118635545000 119855796320 122803070000 123380966800 129075472960 131092277225 132249460000 135583480000 136643416000 137539438400 144057447500 144853345000 149819745400 154226208500 161344341200 165546680000 167798114848 170804270000 171924298000 176258524000 187274681750 189816872000 192782760625 201680426500 202263880000 209747643560 214905372500 220323155000 230491916000 231765352000 237271090000 239711592640 245606140000 246761933600 252100533125 262184554450 264498920000 288114895000 289706690000 299639490800 308452417000 322688682400 335596229696 341608540000 343848596000 352517048000 374549363500 385565521250 403360853000 419495287120 429810745000 440646310000 460983832000 468186704375 474542180000 491212280000 493523867200 504201066250 524369108900 576229790000 579413380000 599278981600 616904834000 645377364800 655461386125 683217080000 687697192000 749098727000 771131042500 806721706000 838990574240 859621490000 881292620000 936373408750 949084360000 1008402132500 1048738217800 1152459580000 1158826760000 1198557963200 1233809668000 1310922772250 1498197454000 1542262085000 1613443412000 1677981148480 1719242980000 1762585240000 1872746817500 2016804265000 2097476435600 2304919160000 2467619336000 2621845544500 2996394908000 3084524170000 3226886824000 3277306930625 3438485960000 3745493635000 4033608530000 4194952871200 5243691089000 5992789816000 6169048340000 6554613861250 7490987270000 8067217060000 8389905742400 10487382178000 12338096680000 13109227722500 14981974540000 16134434120000 20974764356000 26218455445000 29963949080000 41949528712000 52436910890000 104873821780000 209747643560000
- Sum of all divisors σ(n): 694958828788224
- Sum of proper divisors (its aliquot sum) s(n): 485211185228224
- 209747643560000 is an abundant number, because the sum of its proper divisors (485211185228224) is greater than itself. Its abundance is 275463541668224
Bases of 209747643560000
- Binary: 1011111011000011101011011100100101110000010000002
- Hexadecimal: 0xBEC3ADC97040
- Base-36: 22CKQJG9Q8
Squares and roots of 209747643560000
- 209747643560000 squared (2097476435600002) is 43994073978972809473600000000
- 209747643560000 cubed (2097476435600003) is 9227653347693859776400444030016000000000000
-
The
square root of 209747643560000 is 14482667.0043883837 -
The
cube root of 209747643560000 is 59415.4006668609
Scales and comparisons
How big is 209747643560000?- 209,747,643,560,000 seconds is equal to 6,669,326 years, 14 weeks, 1 day, 10 hours, 13 minutes, 20 seconds.
-
To count from 1 to 209,747,643,560,000 would take you about sixteen million, six hundred seventy-three thousand, three hundred fifteen 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 209747643560000 cubic inches would be around 4951.3 feet tall.
Recreational maths with 209747643560000
- 209747643560000 backwards is 000065346747902
- The number of decimal digits it has is: 15
- The sum of 209747643560000's digits is 53
- 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 209747643560000 - Facts about the integer". Numbermatics.com. 2024. Web. 23 June 2024.
APA style:
Numbermatics. (2024). Number 209747643560000 - Facts about the integer. Retrieved 23 June 2024, from https://numbermatics.com/n/209747643560000/
Chicago style:
Numbermatics. 2024. "Number 209747643560000 - Facts about the integer". https://numbermatics.com/n/209747643560000/
The information we have on file for 209747643560000 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 209747643560000, math, Factors of 209747643560000, curriculum, school, college, exams, university, Prime factorization of 209747643560000, STEM, science, technology, engineering, physics, economics, calculator, two hundred nine trillion, seven hundred forty-seven billion, six hundred forty-three million, five hundred sixty thousand.