405991872000
405,991,872,000 is an even composite number composed of seven prime numbers multiplied together.
405991872000 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two thousand, five hundred sixty divisors.
Prime factorization of 405991872000:
29 × 33 × 53 × 11 × 13 × 31 × 53
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 5 × 5 × 11 × 13 × 31 × 53)See below for interesting mathematical facts about the number 405991872000 from the Numbermatics database.
Names of 405991872000
- Cardinal: 405991872000 can be written as Four hundred five billion, nine hundred ninety-one million, eight hundred seventy-two thousand.
Scientific notation
- Scientific notation: 4.05991872 × 1011
Factors of 405991872000
Divisors of 405991872000
- Number of divisors d(n): 2560
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 11 12 13 15 16 18 20 22 24 25 26 27 30 31 32 33 36 39 40 44 45 48 50 52 53 54 55 60 62 64 65 66 72 75 78 80 88 90 93 96 99 100 104 106 108 110 117 120 124 125 128 130 132 135 143 144 150 155 156 159 160 165 176 180 186 192 195 198 200 208 212 216 220 225 234 240 248 250 256 260 264 265 270 275 279 286 288 297 300 310 312 318 320 325 330 341 351 352 360 372 375 384 390 396 400 403 416 424 429 432 440 450 465 468 477 480 495 496 500 512 520 528 530 540 550 558 572 576 583 585 594 600 620 624 636 640 650 660 675 682 689 702 704 715 720 744 750 768 775 780 792 795 800 806 825 832 837 848 858 864 880 900 930 936 954 960 975 990 992 1000 1023 1040 1056 1060 1080 1100 1116 1125 1144 1152 1166 1170 1188 1200 1209 1240 1248 1272 1280 1287 1300 1320 1325 1350 1364 1375 1378 1395 1404 1408 1430 1431 1440 1485 1488 1500 1536 1550 1560 1584 1590 1600 1612 1625 1643 1650 1664 1674 1696 1705 1716 1728 1749 1755 1760 1800 1860 1872 1908 1920 1950 1980 1984 2000 2015 2046 2067 2080 2112 2120 2145 2160 2200 2232 2250 2288 2304 2325 2332 2340 2376 2385 2400 2418 2475 2480 2496 2544 2560 2574 2600 2640 2650 2700 2728 2750 2756 2790 2808 2816 2860 2862 2880 2915 2925 2970 2976 3000 3069 3100 3120 3168 3180 3200 3224 3250 3286 3300 3328 3348 3375 3392 3410 3432 3445 3456 3498 3510 3520 3575 3600 3627 3720 3744 3816 3840 3861 3875 3900 3960 3968 3975 4000 4030 4092 4125 4134 4160 4185 4224 4240 4290 4320 4400 4433 4464 4500 4576 4608 4650 4664 4680 4752 4770 4800 4836 4875 4929 4950 4960 4992 5088 5115 5148 5200 5247 5280 5300 5400 5456 5500 5512 5580 5616 5632 5720 5724 5760 5830 5850 5940 5952 6000 6045 6138 6200 6201 6240 6336 6360 6400 6435 6448 6500 6572 6600 6625 6656 6696 6750 6784 6820 6864 6890 6912 6975 6996 7020 7040 7150 7155 7200 7254 7425 7440 7488 7579 7632 7680 7722 7750 7800 7920 7936 7950 8000 8060 8184 8215 8250 8268 8320 8370 8448 8480 8525 8580 8640 8745 8775 8800 8866 8928 9000 9152 9207 9300 9328 9360 9504 9540 9600 9672 9750 9858 9900 9920 9984 10075 10176 10230 10296 10335 10400 10494 10560 10600 10725 10800 10881 10912 11000 11024 11160 11232 11440 11448 11520 11625 11660 11700 11880 11904 11925 12000 12090 12276 12375 12400 12402 12480 12672 12720 12800 12870 12896 13000 13144 13200 13250 13299 13392 13500 13568 13640 13728 13780 13824 13950 13992 14040 14080 14300 14310 14400 14508 14575 14625 14787 14850 14880 14976 15158 15264 15345 15444 15500 15600 15741 15840 15872 15900 16000 16120 16368 16430 16500 16536 16640 16740 16896 16960 17050 17160 17225 17280 17490 17550 17600 17732 17856 17875 18000 18073 18135 18304 18414 18600 18603 18656 18720 19008 19080 19200 19305 19344 19500 19716 19800 19840 19875 19968 20150 20352 20460 20592 20670 20800 20925 20988 21120 21200 21359 21450 21600 21762 21824 22000 22048 22165 22320 22464 22737 22880 22896 23040 23250 23320 23400 23760 23808 23850 24000 24180 24552 24645 24750 24800 24804 24960 25344 25440 25575 25740 25792 26000 26235 26288 26400 26500 26598 26784 27000 27136 27280 27456 27560 27900 27984 28080 28160 28600 28620 28800 29016 29150 29250 29574 29700 29760 29952 30225 30316 30528 30690 30888 31000 31005 31200 31482 31680 31800 32000 32175 32240 32736 32860 33000 33072 33280 33480 33920 34100 34320 34450 34560 34875 34980 35100 35200 35464 35712 35750 35775 36000 36146 36270 36608 36828 37125 37200 37206 37312 37440 37895 38016 38160 38400 38610 38688 39000 39432 39600 39680 39750 39897 40300 40704 40920 41075 41184 41340 41600 41850 41976 42240 42400 42625 42718 42900 43200 43524 43648 43725 43875 44000 44096 44330 44361 44640 44928 45474 45760 45792 46035 46500 46640 46800 47520 47616 47700 48000 48360 49104 49290 49500 49600 49608 49920 50375 50688 50880 51150 51480 51584 51675 52000 52470 52576 52800 53000 53196 53568 53625 54000 54219 54405 54560 54912 55120 55800 55968 56160 57200 57240 57600 58032 58300 58500 59148 59400 59520 59625 59904 60450 60632 61056 61380 61776 62000 62010 62400 62964 63360 63600 64000 64077 64350 64480 65472 65720 66000 66144 66495 66960 67840 68200 68211 68640 68900 69120 69750 69960 70200 70400 70928 71424 71500 71550 72000 72292 72540 72875 73216 73656 73935 74250 74400 74412 74624 74880 75790 76032 76320 76725 77220 77376 78000 78705 78864 79200 79360 79500 79794 80600 81408 81840 82150 82368 82680 83200 83700 83952 84480 84800 85250 85436 85800 86125 86400 87048 87296 87450 87750 88000 88192 88660 88722 89280 89856 90365 90675 90948 91520 91584 92070 93000 93015 93280 93600 95040 95400 96000 96525 96720 98208 98580 99000 99200 99216 99840 100750 101760 102300 102960 103168 103350 104000 104625 104940 105152 105600 106000 106392 106795 107136 107250 108000 108438 108810 109120 109824 110240 110825 111600 111936 112320 113685 114400 114480 115200 116064 116600 117000 118296 118800 119040 119250 119691 120900 121264 122112 122760 123225 123552 124000 124020 124800 125928 126720 127200 127875 128154 128700 128960 130944 131175 131440 132000 132288 132990 133920 135680 136400 136422 137280 137800 139500 139920 140400 140800 141856 142848 143000 143100 144000 144584 145080 145750 147312 147870 148500 148800 148824 149248 149760 151125 151580 152064 152640 153450 154440 154752 155025 156000 157410 157728 158400 159000 159588 160875 161200 162657 163680 164300 164736 165360 166400 167400 167904 169600 170500 170872 171600 172250 172800 174096 174592 174900 175500 176000 176384 177320 177444 178560 178875 179712 180730 181350 181896 183040 183168 184140 186000 186030 186560 187200 189475 190080 190800 192000 192231 193050 193440 196416 197160 198000 198400 198432 199485 201500 203520 204600 204633 205375 205920 206336 206700 208000 209250 209880 210304 211200 212000 212784 213590 214272 214500 216000 216876 217620 218240 218625 219648 220480 221650 221805 223200 223872 224640 227370 228800 228960 230175 232128 233200 234000 234949 236592 237600 238080 238500 239382 241800 242528 244224 245520 246450 247104 248000 248040 249600 251856 253440 254400 255750 256308 257400 257920 258375 261888 262350 262880 264000 264576 265980 267840 271095 272025 272800 272844 274560 275600 279000 279840 280800 283712 286000 286200 288000 289168 290160 291500 294624 295740 297000 297600 297648 298496 299520 302250 303160 305280 306900 308880 309504 310050 312000 314820 315456 316800 318000 319176 320385 321750 322400 325314 327360 328600 329472 330720 332475 334800 335808 339200 341000 341055 341744 343200 344500 345600 348192 349800 351000 352000 352768 354640 354888 357120 357750 361460 362700 363792 366080 366336 368280 369675 372000 372060 373120 374400 378950 380160 381600 383625 384462 386100 386880 392832 393525 394320 396000 396800 396864 398970 403000 407040 409200 409266 410750 411840 413400 416000 418500 419760 420608 422400 424000 425568 427180 428544 429000 432000 433752 435240 436480 437250 440960 443300 443610 446400 447744 449280 451825 453375 454740 457600 457920 460350 464256 465075 466400 468000 469898 473184 475200 477000 478764 482625 483600 485056 487971 491040 492900 494208 496000 496080 499200 503712 508800 511500 512616 514800 515840 516750 523776 524700 525760 528000 529152 531960 533975 535680 542190 544050 545600 545688 549120 551200 554125 558000 559680 561600 567424 568425 572000 572400 576000 576693 578336 580320 583000 589248 591480 594000 595200 595296 598455 604500 606320 610560 613800 616125 617760 619008 620100 624000 629640 630912 633600 636000 638352 640770 643500 644800 650628 654720 655875 657200 658944 661440 664950 669600 671616 678400 682000 682110 683488 686400 689000 696384 699600 702000 704000 704847 709280 709776 714240 715500 722920 725400 727584 732672 736560 739350 744000 744120 746240 748800 757900 760320 763200 767250 768924 772200 773760 775125 785664 787050 788640 792000 793728 797940 806000 813285 818400 818532 821500 823680 826800 832000 837000 839520 841216 848000 851136 854360 858000 864000 867504 870480 872960 874500 881920 886600 887220 892800 895488 898560 903650 906750 909480 915200 915840 920700 928512 930150 932800 936000 939796 946368 947375 950400 954000 957528 961155 965250 967200 970112 975942 982080 985800 988416 992000 992160 997425 1007424 1017600 1023000 1023165 1025232 1029600 1031680 1033500 1049400 1051520 1056000 1058304 1063920 1067950 1071360 1084380 1088100 1091200 1091376 1098240 1102400 1108250 1109025 1116000 1119360 1123200 1134848 1136850 1144000 1144800 1150875 1153386 1156672 1160640 1166000 1174745 1178496 1182960 1188000 1190400 1190592 1196910 1209000 1212640 1221120 1227600 1232250 1235520 1240200 1248000 1259280 1261824 1267200 1272000 1276704 1281540 1287000 1289600 1301256 1309440 1311750 1314400 1322880 1329900 1339200 1343232 1355475 1360125 1364000 1364220 1366976 1372800 1378000 1392768 1399200 1404000 1409694 1418560 1419552 1431000 1445840 1450800 1455168 1473120 1478700 1488000 1488240 1492480 1497600 1515800 1526400 1534500 1537848 1544400 1547520 1550250 1571328 1574100 1577280 1584000 1587456 1595880 1601925 1612000 1626570 1636800 1637064 1643000 1647360 1653600 1662375 1674000 1679040 1696000 1702272 1705275 1708720 1716000 1728000 1735008 1740960 1749000 1763840 1773200 1774440 1785600 1807300 1813500 1818960 1830400 1831680 1841400 1848375 1857024 1860300 1865600 1872000 1879592 1892736 1894750 1900800 1908000 1915056 1922310 1930500 1934400 1940224 1951884 1964160 1967625 1971600 1976832 1984000 1984320 1994850 2014848 2035200 2046000 2046330 2050464 2059200 2067000 2098800 2103040 2112000 2114541 2127840 2135900 2142720 2168760 2176200 2182400 2182752 2204800 2216500 2218050 2232000 2238720 2246400 2259125 2269696 2273700 2288000 2289600 2301750 2306772 2313344 2321280 2325375 2332000 2349490 2356992 2365920 2376000 2381184 2393820 2418000 2425280 2439855 2455200 2464500 2471040 2480400 2496000 2518560 2523648 2544000 2553408 2563080 2574000 2579200 2602512 2618880 2623500 2628800 2645760 2659800 2669875 2678400 2686464 2710950 2720250 2728000 2728440 2733952 2745600 2756000 2785536 2798400 2808000 2819388 2837120 2839104 2842125 2862000 2883465 2891680 2901600 2910336 2946240 2957400 2976000 2976480 2992275 3031600 3052800 3069000 3075696 3088800 3095040 3100500 3148200 3154560 3168000 3174912 3191760 3203850 3224000 3253140 3273600 3274128 3286000 3294720 3307200 3324750 3348000 3358080 3392000 3404544 3410550 3417440 3432000 3470016 3481920 3498000 3524235 3546400 3548880 3571200 3614600 3627000 3637920 3663360 3682800 3696750 3720600 3731200 3744000 3759184 3785472 3789500 3801600 3816000 3830112 3844620 3861000 3868800 3880448 3903768 3928320 3935250 3943200 3968640 3989700 4029696 4066425 4092000 4092660 4100928 4118400 4134000 4197600 4206080 4229082 4255680 4271800 4337520 4352400 4364800 4365504 4409600 4433000 4436100 4464000 4477440 4492800 4518250 4547400 4576000 4579200 4603500 4613544 4626688 4642560 4650750 4664000 4698980 4713984 4731840 4752000 4762368 4787640 4805775 4836000 4850560 4879710 4910400 4929000 4942080 4960800 4987125 5037120 5088000 5106816 5115825 5126160 5148000 5158400 5205024 5247000 5257600 5291520 5319600 5339750 5356800 5421900 5440500 5456000 5456880 5467904 5491200 5512000 5545125 5571072 5596800 5616000 5638776 5674240 5678208 5684250 5724000 5766930 5783360 5803200 5820672 5873725 5892480 5914800 5952000 5952960 5984550 6063200 6105600 6138000 6151392 6177600 6201000 6296400 6309120 6336000 6343623 6383520 6407700 6448000 6506280 6547200 6548256 6572000 6614400 6649500 6696000 6716160 6777375 6809088 6821100 6834880 6864000 6940032 6963840 6996000 7048470 7092800 7097760 7229200 7254000 7275840 7365600 7393500 7441200 7462400 7488000 7518368 7570944 7579000 7632000 7660224 7689240 7722000 7737600 7807536 7856640 7870500 7886400 7937280 7979400 8009625 8059392 8132850 8184000 8185320 8201856 8236800 8268000 8395200 8458164 8511360 8526375 8543600 8675040 8704800 8731008 8819200 8866000 8872200 8928000 9036500 9094800 9152000 9158400 9207000 9227088 9253376 9285120 9301500 9328000 9397960 9463680 9504000 9524736 9575280 9611550 9672000 9701120 9759420 9820800 9858000 9884160 9921600 9974250 10074240 10176000 10213632 10231650 10252320 10296000 10410048 10494000 10515200 10572705 10639200 10679500 10713600 10843800 10881000 10912000 10913760 10935808 11024000 11090250 11193600 11232000 11277552 11348480 11356416 11368500 11448000 11533860 11566720 11606400 11641344 11747450 11784960 11829600 11905920 11969100 12126400 12199275 12276000 12302784 12355200 12402000 12592800 12618240 12687246 12767040 12815400 12896000 13012560 13094400 13096512 13144000 13228800 13299000 13392000 13432320 13554750 13642200 13669760 13728000 13880064 13927680 13992000 14096940 14185600 14195520 14417325 14458400 14508000 14551680 14731200 14787000 14882400 14961375 15036736 15158000 15264000 15320448 15378480 15444000 15475200 15615072 15741000 15772800 15874560 15958800 16019250 16265700 16368000 16370640 16403712 16473600 16536000 16790400 16916328 17022720 17052750 17087200 17350080 17409600 17462016 17621175 17732000 17744400 17856000 18073000 18189600 18316800 18414000 18454176 18603000 18656000 18795920 18927360 19008000 19150560 19223100 19344000 19402240 19518840 19641600 19716000 19843200 19948500 20148480 20332125 20427264 20463300 20504640 20592000 20820096 20988000 21030400 21145410 21278400 21359000 21687600 21762000 21824000 21827520 22048000 22180500 22387200 22464000 22555104 22712832 22737000 22896000 23067720 23133440 23212800 23494900 23569920 23659200 23811840 23938200 24028875 24252800 24398550 24552000 24605568 24710400 24804000 25185600 25374492 25534080 25579125 25630800 25792000 26025120 26193024 26288000 26457600 26598000 26784000 27109500 27284400 27339520 27456000 27760128 27855360 27984000 28193880 28371200 28391040 28834650 28916800 29016000 29103360 29368625 29462400 29574000 29764800 29922750 30073472 30316000 30528000 30640896 30756960 30888000 31230144 31482000 31545600 31718115 31917600 32038500 32531400 32736000 32741280 32807424 33072000 33580800 33832656 34045440 34105500 34174400 34700160 34819200 34924032 35242350 35464000 35488800 36146000 36379200 36828000 36908352 37206000 37312000 37591840 37854720 38301120 38446200 38688000 39037680 39283200 39432000 39686400 39897000 40296960 40664250 40926600 41009280 41184000 41640192 41976000 42290820 42556800 42718000 43375200 43524000 43655040 44096000 44361000 45110208 45474000 45792000 46135440 46266880 46425600 46989800 47318400 47623680 47876400 48057750 48505600 48797100 49104000 49211136 49420800 49608000 50371200 50748984 51068160 51158250 51261600 52050240 52386048 52576000 52863525 53196000 53568000 54219000 54568800 54679040 55968000 56387760 56742400 56782080 57669300 57833600 58032000 58206720 58737250 58924800 59148000 59529600 59845500 60146944 60632000 60996375 61281792 61513920 61776000 62460288 62964000 63091200 63436230 63835200 64077000 65062800 65472000 65482560 66144000 67161600 67665312 68211000 68348800 69400320 69638400 70484700 70928000 70977600 72086625 72292000 72758400 73656000 73816704 74412000 75183680 76602240 76892400 77376000 78075360 78864000 79372800 79794000 81328500 81853200 82018560 82368000 83280384 83952000 84581640 85113600 85436000 86750400 87048000 87310080 88105875 88722000 90220416 90948000 91584000 92270880 93979600 94636800 95752800 96115500 97011200 97594200 98208000 98422272 99216000 100742400 101497968 102136320 102316500 102523200 104100480 104772096 105152000 105727050 106392000 108438000 109137600 111936000 112775520 113564160 115338600 115667200 116064000 117474500 117849600 118296000 119059200 119691000 120293888 121264000 121992750 123027840 123552000 124920576 125928000 126872460 127670400 128154000 130125600 130965120 132288000 135330624 136422000 136697600 138800640 139276800 140969400 141856000 141955200 144173250 144584000 145516800 147312000 147633408 148824000 150367360 153204480 153784800 156150720 157728000 158590575 159588000 162657000 163706400 164037120 167904000 169163280 170227200 170872000 173500800 174096000 174620160 176211750 177444000 180440832 181896000 184541760 187959200 189273600 191505600 192231000 195188400 196416000 198432000 201484800 202995936 204633000 205046400 208200960 211454100 212784000 216876000 218275200 225551040 230677200 231334400 232128000 234949000 236592000 238118400 239382000 242528000 243985500 246055680 247104000 249841152 251856000 253744920 255340800 256308000 260251200 261930240 264317625 270661248 272844000 273395200 281938800 283712000 283910400 288346500 289168000 291033600 294624000 295266816 297648000 300734720 306408960 307569600 312301440 315456000 317181150 319176000 325314000 327412800 335808000 338326560 341744000 347001600 348192000 352423500 354888000 360881664 363792000 369083520 375918400 383011200 384462000 390376800 396864000 405991872 409266000 410092800 416401920 422908200 425568000 433752000 436550400 451102080 461354400 469898000 473184000 478764000 485056000 487971000 492111360 503712000 507489840 510681600 512616000 520502400 523860480 528635250 541322496 545688000 563877600 567820800 576693000 578336000 589248000 595296000 601469440 615139200 624602880 634362300 638352000 650628000 654825600 676653120 683488000 694003200 696384000 704847000 709776000 727584000 738167040 751836800 766022400 768924000 780753600 792952875 811983744 818532000 820185600 845816400 851136000 867504000 873100800 902204160 922708800 939796000 946368000 957528000 975942000 1007424000 1014979680 1025232000 1041004800 1057270500 1082644992 1091376000 1127755200 1153386000 1156672000 1190592000 1230278400 1249205760 1268724600 1276704000 1301256000 1309651200 1353306240 1366976000 1409694000 1419552000 1455168000 1476334080 1503673600 1532044800 1537848000 1561507200 1585905750 1623967488 1637064000 1691632800 1735008000 1804408320 1845417600 1879592000 1915056000 1951884000 2029959360 2050464000 2082009600 2114541000 2182752000 2255510400 2306772000 2460556800 2537449200 2553408000 2602512000 2619302400 2706612480 2819388000 2839104000 3007347200 3075696000 3123014400 3171811500 3247934976 3274128000 3383265600 3470016000 3690835200 3759184000 3830112000 3903768000 4059918720 4100928000 4229082000 4365504000 4511020800 4613544000 5074898400 5205024000 5413224960 5638776000 6151392000 6246028800 6343623000 6548256000 6766531200 7381670400 7518368000 7660224000 7807536000 8119837440 8458164000 9022041600 9227088000 10149796800 10410048000 11277552000 12302784000 12687246000 13096512000 13533062400 15036736000 15615072000 16239674880 16916328000 18454176000 20299593600 22555104000 25374492000 27066124800 31230144000 33832656000 36908352000 40599187200 45110208000 50748984000 67665312000 81198374400 101497968000 135330624000 202995936000 405991872000
- Sum of all divisors σ(n): 1853161390080
- Sum of proper divisors (its aliquot sum) s(n): 1447169518080
- 405991872000 is an abundant number, because the sum of its proper divisors (1447169518080) is greater than itself. Its abundance is 1041177646080
Bases of 405991872000
- Binary: 1011110100001110000000001010110000000002
- Hexadecimal: 0x5E87005600
- Base-36: 56ID2TC0
Squares and roots of 405991872000
- 405991872000 squared (4059918720002) is 164829400130064384000000
- 405991872000 cubed (4059918720003) is 66919396719441882740686848000000000
-
The
square root of 405991872000 is 637174.9147604605 -
The
cube root of 405991872000 is 7404.6712167529
Scales and comparisons
How big is 405991872000?- 405,991,872,000 seconds is equal to 12,909 years, 14 weeks, 6 days.
-
To count from 1 to 405,991,872,000 would take you about twenty-five thousand, eight hundred eighteen 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 405991872000 cubic inches would be around 617.1 feet tall.
Recreational maths with 405991872000
- 405991872000 backwards is 000278199504
- 405991872000 is a
Harshad number . - The number of decimal digits it has is: 12
- The sum of 405991872000's digits is 45
- 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 405991872000 - Facts about the integer". Numbermatics.com. 2024. Web. 28 April 2024.
APA style:
Numbermatics. (2024). Number 405991872000 - Facts about the integer. Retrieved 28 April 2024, from https://numbermatics.com/n/405991872000/
Chicago style:
Numbermatics. 2024. "Number 405991872000 - Facts about the integer". https://numbermatics.com/n/405991872000/
The information we have on file for 405991872000 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 405991872000, math, Factors of 405991872000, curriculum, school, college, exams, university, Prime factorization of 405991872000, STEM, science, technology, engineering, physics, economics, calculator, four hundred five billion, nine hundred ninety-one million, eight hundred seventy-two thousand.