70215034208256
70,215,034,208,256 is an even composite number composed of six prime numbers multiplied together.
70215034208256 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two thousand, two hundred eighty divisors.
Prime factorization of 70215034208256:
218 × 34 × 7 × 19 × 232 × 47
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 7 × 19 × 23 × 23 × 47)See below for interesting mathematical facts about the number 70215034208256 from the Numbermatics database.
Names of 70215034208256
- Cardinal: 70215034208256 can be written as Seventy trillion, two hundred fifteen billion, thirty-four million, two hundred eight thousand, two hundred fifty-six.
Scientific notation
- Scientific notation: 7.0215034208256 × 1013
Factors of 70215034208256
Divisors of 70215034208256
- Number of divisors d(n): 2280
-
Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 16 18 19 21 23 24 27 28 32 36 38 42 46 47 48 54 56 57 63 64 69 72 76 81 84 92 94 96 108 112 114 126 128 133 138 141 144 152 161 162 168 171 184 188 189 192 207 216 224 228 252 256 266 276 282 288 304 322 324 329 336 342 368 376 378 384 399 414 423 432 437 448 456 483 504 512 513 529 532 552 564 567 576 608 621 644 648 658 672 684 736 752 756 768 798 828 846 864 874 893 896 912 966 987 1008 1024 1026 1058 1064 1081 1104 1128 1134 1152 1197 1216 1242 1269 1288 1296 1311 1316 1344 1368 1449 1472 1504 1512 1536 1539 1587 1596 1656 1692 1728 1748 1786 1792 1824 1863 1932 1974 2016 2048 2052 2116 2128 2162 2208 2256 2268 2304 2394 2432 2484 2538 2576 2592 2622 2632 2679 2688 2736 2898 2944 2961 3008 3024 3059 3072 3078 3174 3192 3243 3312 3384 3456 3496 3572 3584 3591 3648 3703 3726 3807 3864 3933 3948 4032 4096 4104 4232 4256 4324 4347 4416 4512 4536 4608 4761 4788 4864 4968 5076 5152 5184 5244 5264 5358 5376 5472 5796 5888 5922 6016 6048 6118 6144 6156 6251 6348 6384 6486 6624 6768 6912 6992 7144 7168 7182 7296 7406 7452 7567 7614 7728 7866 7896 8037 8064 8192 8208 8464 8512 8648 8694 8832 8883 9024 9072 9177 9216 9522 9576 9728 9729 9936 10051 10152 10304 10368 10488 10528 10716 10752 10773 10944 11109 11592 11776 11799 11844 12032 12096 12236 12288 12312 12502 12696 12768 12972 13041 13248 13536 13824 13984 14283 14288 14336 14364 14592 14812 14904 15134 15228 15456 15732 15792 16074 16128 16384 16416 16928 17024 17296 17388 17664 17766 18048 18144 18354 18432 18753 19044 19152 19456 19458 19872 20102 20304 20539 20608 20736 20976 21056 21432 21504 21546 21888 22218 22701 23184 23552 23598 23688 24064 24111 24192 24472 24576 24624 24863 25004 25392 25536 25944 26082 26496 26649 27072 27531 27648 27968 28566 28576 28672 28728 29184 29187 29624 29808 30153 30268 30456 30912 31464 31584 32148 32256 32768 32832 33327 33856 34048 34592 34776 35328 35397 35532 36096 36288 36708 36864 37506 38088 38304 38912 38916 39744 40204 40608 41078 41216 41472 41952 42112 42849 42864 43008 43092 43776 44436 45402 46368 47104 47196 47376 48128 48222 48384 48944 49152 49248 49726 50008 50784 51072 51888 52164 52992 53298 54144 55062 55296 55936 56259 57132 57152 57344 57456 58368 58374 59248 59616 60306 60536 60912 61617 61824 62928 63168 64296 64512 65536 65664 66654 67712 68096 68103 69184 69552 70357 70656 70794 71064 72192 72333 72576 73416 73728 74589 75012 76176 76608 77824 77832 79488 80408 81216 82156 82432 82593 82944 83904 84224 85698 85728 86016 86184 87552 87561 88872 90459 90804 92736 94208 94392 94752 96256 96444 96768 97888 98304 98496 99452 99981 100016 101568 102144 103776 104328 105984 106596 108288 110124 110592 111872 112518 114264 114304 114688 114912 116736 116748 118496 119232 120612 121072 121824 123234 123648 125856 126336 128592 129024 131072 131328 133308 135424 136192 136206 138368 139104 140714 141312 141588 142128 143773 144384 144666 145152 146832 147456 149178 150024 152352 153216 155648 155664 158976 160816 162432 164312 164864 165186 165888 167808 168448 168777 171396 171456 172032 172368 174041 175104 175122 177744 180918 181608 184851 185472 188416 188784 189504 192512 192888 193536 195776 196608 196992 198904 199962 200032 203136 204288 204309 207552 208656 211071 211968 213192 216576 220248 221184 223744 223767 225036 228528 228608 229376 229824 233472 233496 236992 238464 241224 242144 243648 246468 247296 247779 251712 252672 257184 258048 262144 262656 266616 270848 271377 272384 272412 276736 278208 281428 282624 283176 284256 287546 288768 289332 290304 293664 294912 298356 299943 300048 304704 306432 311296 311328 317952 321632 324864 328624 329728 330372 331776 335616 336896 337554 342792 342912 344064 344736 348082 350208 350244 355488 361836 363216 369702 370944 376832 377568 379008 385024 385776 387072 391552 393216 393984 397808 399924 400064 406272 408576 408618 415104 417312 422142 423936 426384 431319 433152 440496 442368 447488 447534 450072 457056 457216 458752 459648 466944 466992 472397 473984 476928 482448 484288 487296 492936 494592 495558 503424 505344 506331 514368 516096 522123 525312 533232 541696 542754 544768 544824 553472 554553 556416 562856 565248 566352 568512 575092 577536 578664 580608 587328 589824 596712 599886 600096 609408 612864 612927 622592 622656 633213 635904 643264 649728 657248 659456 660744 663552 671232 671301 673792 675108 685584 685824 688128 689472 696164 700416 700488 710976 723672 726432 739404 741888 753664 755136 758016 770048 771552 774144 783104 786432 787968 795616 799848 800128 812544 814131 817152 817236 830208 834624 844284 847872 852768 862638 866304 880992 884736 894976 895068 900144 914112 914432 917504 919296 933888 933984 944794 947968 953856 964896 968576 974592 985872 989184 991116 1006848 1010688 1012662 1028736 1032192 1044246 1050624 1066464 1083392 1085508 1089536 1089648 1106944 1109106 1112832 1125712 1130496 1132704 1137024 1150184 1155072 1157328 1161216 1174656 1179648 1193424 1199772 1200192 1218816 1225728 1225854 1245184 1245312 1266426 1271808 1286528 1293957 1299456 1314496 1318912 1321488 1327104 1342464 1342602 1347584 1350216 1371168 1371648 1376256 1378944 1392328 1400832 1400976 1417191 1421952 1447344 1452864 1478808 1483776 1507328 1510272 1516032 1540096 1543104 1548288 1566208 1566369 1575936 1591232 1599696 1600256 1625088 1628262 1634304 1634472 1660416 1663659 1669248 1688568 1695744 1705536 1725276 1732608 1761984 1769472 1789952 1790136 1800288 1828224 1828864 1835008 1838592 1867776 1867968 1889588 1895936 1899639 1907712 1929792 1937152 1949184 1971744 1978368 1982232 2013696 2013903 2021376 2025324 2057472 2064384 2088492 2101248 2132928 2166784 2171016 2179072 2179296 2213888 2218212 2225664 2251424 2260992 2265408 2274048 2300368 2310144 2314656 2322432 2349312 2359296 2386848 2399544 2400384 2437632 2451456 2451708 2490368 2490624 2532852 2543616 2573056 2587914 2598912 2628992 2637824 2642976 2654208 2684928 2685204 2695168 2700432 2742336 2743296 2752512 2757888 2784656 2801664 2801952 2834382 2843904 2894688 2905728 2957616 2967552 3014656 3020544 3032064 3080192 3086208 3096576 3132416 3132738 3151872 3182464 3199392 3200512 3250176 3256524 3268608 3268944 3306779 3320832 3327318 3338496 3377136 3391488 3411072 3450552 3465216 3523968 3538944 3579904 3580272 3600576 3656448 3657728 3677184 3735552 3735936 3779176 3791872 3799278 3815424 3859584 3874304 3881871 3898368 3943488 3956736 3964464 4027392 4027806 4042752 4050648 4114944 4128768 4176984 4202496 4251573 4265856 4333568 4342032 4358144 4358592 4427776 4436424 4451328 4502848 4521984 4530816 4548096 4600736 4620288 4629312 4644864 4698624 4699107 4773696 4799088 4800768 4875264 4902912 4903416 4980736 4981248 5065704 5087232 5146112 5175828 5197824 5257984 5275648 5285952 5308416 5369856 5370408 5390336 5400864 5484672 5486592 5505024 5515776 5569312 5603328 5603904 5668764 5687808 5698917 5789376 5811456 5915232 5935104 6029312 6041088 6064128 6160384 6172416 6193152 6264832 6265476 6303744 6364928 6398784 6401024 6500352 6513048 6537216 6537888 6613558 6641664 6654636 6676992 6754272 6782976 6822144 6901104 6930432 7047936 7077888 7159808 7160544 7201152 7312896 7315456 7354368 7471104 7471872 7558352 7583744 7598556 7630848 7719168 7748608 7763742 7796736 7886976 7913472 7928928 8054784 8055612 8085504 8101296 8229888 8257536 8353968 8404992 8503146 8531712 8667136 8684064 8716288 8717184 8855552 8872848 8902656 9005696 9043968 9061632 9096192 9201472 9240576 9258624 9289728 9397248 9398214 9547392 9598176 9601536 9750528 9805824 9806832 9920337 9962496 10131408 10174464 10292224 10351656 10395648 10515968 10551296 10571904 10616832 10739712 10740816 10780672 10801728 10969344 10973184 11031552 11138624 11206656 11207808 11337528 11375616 11397834 11578752 11622912 11645613 11830464 11870208 12082176 12128256 12320768 12344832 12386304 12529664 12530952 12607488 12729856 12754719 12797568 12802048 13000704 13026096 13074432 13075776 13227116 13283328 13309272 13353984 13508544 13565952 13644288 13802208 13860864 14095872 14097321 14319616 14321088 14402304 14625792 14630912 14708736 14942208 14943744 15116704 15167488 15197112 15261696 15438336 15497216 15527484 15593472 15773952 15826944 15857856 16109568 16111224 16171008 16202592 16459776 16515072 16707936 16809984 17006292 17063424 17334272 17368128 17432576 17434368 17711104 17745696 17805312 18011392 18087936 18123264 18192384 18402944 18481152 18517248 18579456 18794496 18796428 19094784 19196352 19203072 19501056 19611648 19613664 19840674 19924992 20262816 20348928 20584448 20703312 20791296 21031936 21102592 21143808 21233664 21479424 21481632 21561344 21603456 21938688 21946368 22063104 22277248 22413312 22415616 22675056 22751232 22795668 23157504 23245824 23291226 23660928 23740416 24164352 24256512 24689664 24772608 25059328 25061904 25214976 25459712 25509438 25595136 25604096 26001408 26052192 26148864 26151552 26454232 26566656 26618544 26707968 27017088 27131904 27288576 27604416 27721728 28191744 28194642 28639232 28642176 28804608 29251584 29261824 29417472 29761011 29887488 30233408 30334976 30394224 30523392 30876672 30994432 31054968 31186944 31547904 31653888 31715712 32219136 32222448 32342016 32405184 32919552 33415872 33619968 34012584 34126848 34668544 34736256 34865152 34868736 35422208 35491392 35610624 36022784 36246528 36384768 36805888 36962304 37034496 37158912 37588992 37592856 38189568 38264157 38392704 38406144 39002112 39223296 39227328 39681348 39849984 40525632 40697856 41168896 41406624 41582592 42063872 42205184 42287616 42958848 42963264 43122688 43206912 43877376 43892736 44126208 44554496 44826624 44831232 45350112 45502464 45591336 46315008 46491648 46582452 47321856 47480832 48328704 48513024 49379328 49545216 50118656 50123808 50429952 50919424 51018876 51190272 51208192 52002816 52104384 52297728 52303104 52908464 53133312 53237088 53415936 54034176 54263808 54577152 55208832 55443456 56383488 56389284 57278464 57284352 57609216 58503168 58523648 58834944 59522022 59774976 60466816 60669952 60788448 61046784 61753344 61988864 62109936 62373888 63095808 63307776 63431424 64438272 64444896 64684032 64810368 65839104 66831744 67239936 68025168 68253696 69337088 69472512 69737472 70844416 70982784 71221248 72045568 72493056 72769536 73611776 74068992 74317824 75177984 75185712 76379136 76528314 76785408 76812288 78004224 78446592 78454656 79362696 79699968 81051264 81395712 82337792 82813248 83165184 84127744 84575232 85917696 85926528 86245376 86413824 87754752 87785472 88252416 89108992 89283033 89662464 90700224 91004928 91182672 92630016 92983296 93164904 94643712 94961664 96657408 97026048 98758656 100237312 100247616 100859904 101838848 102037752 102380544 102416384 104005632 104208768 104595456 104606208 105816928 106266624 106474176 106831872 108068352 109154304 110417664 110886912 112766976 112778568 114556928 114568704 115218432 117006336 117047296 117669888 119044044 119549952 120933632 121339904 121576896 122093568 123506688 123977728 124219872 124747776 126191616 126615552 126862848 128876544 128889792 129368064 129620736 131678208 133663488 134479872 136050336 136507392 138674176 138945024 139474944 141688832 141965568 142442496 144091136 144986112 145539072 147223552 148137984 148635648 150355968 150371424 152758272 153056628 153570816 153624576 156008448 156893184 156909312 158725392 159399936 162102528 162791424 164675584 165626496 166330368 168255488 169150464 171835392 171853056 172827648 175509504 175570944 176504832 178217984 178566066 179324928 181400448 182009856 182365344 185260032 185966592 186329808 189287424 189923328 193314816 194052096 197517312 200474624 200495232 201719808 203677696 204075504 204761088 204832768 208011264 208417536 209212416 211633856 212533248 212948352 213663744 216136704 218308608 220835328 225533952 225557136 229137408 230436864 234012672 234094592 235339776 238088088 239099904 241867264 242679808 243153792 244187136 247013376 247955456 248439744 249495552 252383232 253725696 257753088 257779584 258736128 259241472 263356416 267326976 267849099 272100672 273014784 277890048 278949888 283377664 283931136 284884992 288182272 289972224 291078144 294447104 296275968 300711936 300742848 305516544 306113256 307141632 307249152 312016896 313786368 313818624 317450784 318799872 324205056 329351168 331252992 332660736 336510976 338300928 343670784 343706112 345655296 351019008 351141888 353009664 356435968 357132132 358649856 362800896 364019712 364730688 370520064 371933184 372659616 378574848 379846656 386629632 388104192 395034624 400949248 400990464 403439616 407355392 408151008 409522176 409665536 416022528 416835072 418424832 423267712 425066496 425896704 427327488 432273408 436617216 441670656 451067904 451114272 458274816 460873728 468025344 470679552 476176176 478199808 483734528 485359616 486307584 488374272 494026752 495910912 496879488 498991104 504766464 507451392 515506176 515559168 518482944 526712832 534653952 535698198 544201344 546029568 555780096 557899776 567862272 569769984 576364544 579944448 582156288 588894208 592551936 601423872 601485696 611033088 612226512 614283264 614498304 624033792 627637248 634901568 637599744 648410112 658702336 662505984 673021952 676601856 687412224 691310592 702038016 702283776 706019328 712871936 714264264 717299712 725601792 728039424 729461376 741040128 743866368 745319232 757149696 773259264 776208384 790069248 801898496 801980928 814710784 816302016 819044352 819331072 833670144 836849664 846535424 850132992 851793408 854654976 864546816 873234432 883341312 902135808 902228544 916549632 921747456 936050688 941359104 952352352 956399616 967469056 970719232 972615168 988053504 991821824 993758976 997982208 1009532928 1014902784 1031012352 1031118336 1036965888 1053425664 1069307904 1071396396 1088402688 1092059136 1111560192 1115799552 1135724544 1139539968 1152729088 1159888896 1164312576 1177788416 1185103872 1202847744 1202971392 1222066176 1224453024 1228566528 1228996608 1248067584 1255274496 1269803136 1275199488 1296820224 1317404672 1325011968 1346043904 1353203712 1374824448 1382621184 1404076032 1412038656 1425743872 1428528528 1434599424 1451203584 1456078848 1458922752 1482080256 1487732736 1490638464 1514299392 1546518528 1580138496 1603961856 1629421568 1632604032 1638088704 1638662144 1667340288 1673699328 1693070848 1703586816 1709309952 1729093632 1746468864 1766682624 1804271616 1804457088 1833099264 1843494912 1872101376 1904704704 1912799232 1934938112 1945230336 1976107008 1983643648 1987517952 2019065856 2029805568 2062236672 2073931776 2106851328 2138615808 2142792792 2176805376 2184118272 2223120384 2231599104 2271449088 2305458176 2319777792 2328625152 2355576832 2370207744 2405695488 2405942784 2444132352 2448906048 2457133056 2457993216 2510548992 2539606272 2550398976 2593640448 2634809344 2650023936 2692087808 2706407424 2749648896 2765242368 2808152064 2824077312 2851487744 2857057056 2869198848 2902407168 2912157696 2917845504 2964160512 2975465472 2981276928 3028598784 3093037056 3160276992 3207923712 3258843136 3265208064 3276177408 3334680576 3347398656 3386141696 3407173632 3418619904 3458187264 3492937728 3533365248 3608543232 3608914176 3666198528 3686989824 3744202752 3809409408 3825598464 3869876224 3890460672 3952214016 3975035904 4038131712 4059611136 4124473344 4147863552 4277231616 4285585584 4353610752 4368236544 4446240768 4463198208 4542898176 4610916352 4639555584 4711153664 4740415488 4811885568 4888264704 4897812096 4914266112 4915986432 5021097984 5079212544 5187280896 5300047872 5384175616 5412814848 5499297792 5530484736 5616304128 5702975488 5714114112 5738397696 5804814336 5835691008 5928321024 5950930944 5962553856 6057197568 6320553984 6415847424 6517686272 6530416128 6552354816 6669361152 6694797312 6772283392 6814347264 6916374528 6985875456 7066730496 7217086464 7217828352 7332397056 7373979648 7618818816 7651196928 7739752448 7780921344 7904428032 7950071808 8076263424 8119222272 8248946688 8295727104 8554463232 8571171168 8707221504 8736473088 8892481536 8926396416 9085796352 9221832704 9279111168 9422307328 9480830976 9623771136 9776529408 9795624192 9828532224 10042195968 10158425088 10374561792 10600095744 10825629696 10998595584 11060969472 11232608256 11405950976 11428228224 11476795392 11609628672 11671382016 11856642048 11925107712 12114395136 12831694848 13060832256 13104709632 13338722304 13389594624 13544566784 13628694528 13832749056 14133460992 14435656704 14664794112 14747959296 15237637632 15479504896 15561842688 15900143616 16152526848 16238444544 16497893376 16591454208 17108926464 17142342336 17414443008 17784963072 17852792832 18171592704 18443665408 18844614656 18961661952 19247542272 19553058816 19591248384 19657064448 20084391936 20316850176 20749123584 21200191488 21651259392 21997191168 22121938944 22811901952 22856456448 22953590784 23219257344 23342764032 23713284096 23850215424 24228790272 25663389696 26121664512 26209419264 26677444608 26779189248 27089133568 27257389056 27665498112 28266921984 28871313408 29329588224 30475275264 30959009792 31123685376 31800287232 32476889088 32995786752 33182908416 34217852928 34284684672 34828886016 35569926144 36343185408 37689229312 38495084544 39182496768 39314128896 40168783872 40633700352 41498247168 42400382976 43994382336 44243877888 45623803904 45712912896 46438514688 46685528064 47700430848 48457580544 51326779392 52243329024 53354889216 53558378496 54178267136 54514778112 55330996224 56533843968 57742626816 58659176448 60950550528 61918019584 62247370752 63600574464 64953778176 65991573504 66365816832 68435705856 68569369344 69657772032 71139852288 72686370816 76990169088 78364993536 78628257792 80337567744 81267400704 82996494336 84800765952 87988764672 91425825792 92877029376 93371056128 95400861696 102653558784 104486658048 106709778432 108356534272 109029556224 113067687936 115485253632 121901101056 123836039168 124494741504 127201148928 131983147008 132731633664 136871411712 137138738688 139315544064 145372741632 153980338176 156729987072 160675135488 162534801408 165992988672 169601531904 175977529344 182851651584 185754058752 186742112256 190801723392 205307117568 208973316096 213419556864 216713068544 218059112448 230970507264 243802202112 248989483008 254402297856 263966294016 274277477376 278631088128 307960676352 313459974144 325069602816 339203063808 365703303168 371508117504 373484224512 381603446784 410614235136 417946632192 433426137088 436118224896 461941014528 487604404224 497978966016 508804595712 527932588032 548554954752 557262176256 615921352704 626919948288 650139205632 731406606336 746968449024 763206893568 835893264384 866852274176 923882029056 975208808448 1017609191424 1097109909504 1114524352512 1231842705408 1253839896576 1300278411264 1462813212672 1493936898048 1526413787136 1671786528768 1847764058112 1950417616896 2194219819008 2507679793152 2600556822528 2925626425344 3052827574272 3343573057536 3695528116224 3900835233792 4388439638016 5015359586304 5851252850688 7801670467584 8776879276032 10030719172608 11702505701376 17553758552064 23405011402752 35107517104128 70215034208256
- Sum of all divisors σ(n): 269426811118080
- Sum of proper divisors (its aliquot sum) s(n): 199211776909824
- 70215034208256 is an abundant number, because the sum of its proper divisors (199211776909824) is greater than itself. Its abundance is 128996742701568
Bases of 70215034208256
- Binary: 11111111011100001101100010110000000000000000002
- Hexadecimal: 0x3FDC362C0000
- Base-36: OW0CAGW00
Squares and roots of 70215034208256
- 70215034208256 squared (702150342082562) is 4930151028866560284778561536
- 70215034208256 cubed (702150342082563) is 346170723143734044526410759388176335241216
-
The
square root of 70215034208256 is 8379441.1632432861 -
The
cube root of 70215034208256 is 41255.0106840319
Scales and comparisons
How big is 70215034208256?- 70,215,034,208,256 seconds is equal to 2,232,620 years, 46 weeks, 5 days, 57 minutes, 36 seconds.
-
To count from 1 to 70,215,034,208,256 would take you about five million, five hundred eighty-one thousand, five hundred fifty-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 70215034208256 cubic inches would be around 3437.9 feet tall.
Recreational maths with 70215034208256
- 70215034208256 backwards is 65280243051207
- The number of decimal digits it has is: 14
- The sum of 70215034208256'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 70215034208256 - Facts about the integer". Numbermatics.com. 2024. Web. 24 May 2024.
APA style:
Numbermatics. (2024). Number 70215034208256 - Facts about the integer. Retrieved 24 May 2024, from https://numbermatics.com/n/70215034208256/
Chicago style:
Numbermatics. 2024. "Number 70215034208256 - Facts about the integer". https://numbermatics.com/n/70215034208256/
The information we have on file for 70215034208256 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 70215034208256, math, Factors of 70215034208256, curriculum, school, college, exams, university, Prime factorization of 70215034208256, STEM, science, technology, engineering, physics, economics, calculator, seventy trillion, two hundred fifteen billion, thirty-four million, two hundred eight thousand, two hundred fifty-six.