379720371953475072
379,720,371,953,475,072 is an even composite number composed of five prime numbers multiplied together.
What does the number 379720371953475072 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 1920 divisors.
379720371953475072 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one thousand, nine hundred twenty divisors.
Prime factorization of 379720371953475072:
29 × 35 × 13 × 313 × 1993
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 13 × 31 × 31 × 31 × 199 × 199 × 199)See below for interesting mathematical facts about the number 379720371953475072 from the Numbermatics database.
Names of 379720371953475072
- Cardinal: 379720371953475072 can be written as Three hundred seventy-nine quadrillion, seven hundred twenty trillion, three hundred seventy-one billion, nine hundred fifty-three million, four hundred seventy-five thousand and seventy-two.
Scientific notation
- Scientific notation: 3.79720371953475072 × 1017
Factors of 379720371953475072
Divisors of 379720371953475072
- Number of divisors d(n): 1920
-
Complete list of divisors:
1 2 3 4 6 8 9 12 13 16 18 24 26 27 31 32 36 39 48 52 54 62 64 72 78 81 93 96 104 108 117 124 128 144 156 162 186 192 199 208 216 234 243 248 256 279 288 312 324 351 372 384 398 403 416 432 468 486 496 512 558 576 597 624 648 702 744 768 796 806 832 837 864 936 961 972 992 1053 1116 1152 1194 1209 1248 1296 1404 1488 1536 1592 1612 1664 1674 1728 1791 1872 1922 1944 1984 2106 2232 2304 2388 2418 2496 2511 2587 2592 2808 2883 2976 3159 3184 3224 3328 3348 3456 3582 3627 3744 3844 3888 3968 4212 4464 4608 4776 4836 4992 5022 5174 5184 5373 5616 5766 5952 6169 6318 6368 6448 6656 6696 6912 7164 7254 7488 7533 7688 7761 7776 7936 8424 8649 8928 9552 9672 9984 10044 10348 10368 10746 10881 11232 11532 11904 12338 12493 12636 12736 12896 13392 13824 14328 14508 14976 15066 15376 15522 15552 15872 16119 16848 17298 17856 18507 19104 19344 19968 20088 20696 20736 21492 21762 22464 23064 23283 23808 24676 24986 25272 25472 25792 25947 26784 28656 29016 29791 29952 30132 30752 31044 31104 32238 32643 33696 34596 35712 37014 37479 38208 38688 39601 40176 41392 41472 42984 43524 44928 46128 46566 47616 48357 49352 49972 50544 50944 51584 51894 53568 55521 57312 58032 59582 59904 60264 61504 62088 62208 64476 65286 67392 69192 69849 71424 74028 74958 76416 77376 77841 79202 80197 80352 82784 85968 87048 89373 89856 92256 93132 96714 97929 98704 99944 101088 101888 103168 103788 107136 111042 112437 114624 116064 118803 119164 120528 123008 124176 124416 128952 130572 134784 138384 139698 142848 148056 149916 152832 154752 155682 158404 160394 160704 165568 166563 171936 174096 178746 179712 184512 186264 191239 193428 195858 197408 199888 202176 206336 207576 209547 214272 222084 224874 229248 232128 233523 237606 238328 240591 241056 246016 248352 257904 261144 268119 269568 276768 279396 296112 299832 305664 309504 311364 316808 320788 321408 331136 333126 337311 343872 348192 356409 357492 369024 372528 382478 386856 387283 391716 394816 399776 404352 415152 419094 428544 444168 449748 458496 464256 467046 475212 476656 481182 482112 492032 496704 499689 514813 515808 522288 536238 539136 553536 558792 573717 592224 599664 619008 622728 628641 633616 641576 642816 662272 666252 674622 687744 696384 712818 714984 721773 738048 745056 764956 773712 774566 783432 789632 799552 804357 808704 830304 838188 888336 899496 916992 928512 934092 950424 953312 962364 964224 993408 999378 1011933 1029626 1031616 1044576 1069227 1072476 1107072 1117584 1147434 1161849 1184448 1199328 1227631 1245456 1257282 1267232 1283152 1285632 1324544 1332504 1349244 1375488 1392768 1425636 1429968 1443546 1476096 1490112 1499067 1529912 1544439 1547424 1549132 1566864 1579264 1599104 1608714 1617408 1660608 1676376 1721151 1776672 1798992 1857024 1868184 1900848 1906624 1924728 1928448 1986816 1998756 2023866 2059252 2063232 2089152 2138454 2144952 2165319 2214144 2235168 2294868 2323698 2368896 2398656 2413071 2455262 2486107 2490912 2514564 2534464 2566304 2665008 2698488 2750976 2785536 2851272 2859936 2887092 2980224 2998134 3035799 3059824 3088878 3094848 3098264 3133728 3158528 3198208 3207681 3217428 3321216 3352752 3442302 3485547 3553344 3597984 3682893 3736368 3801696 3813248 3849456 3856896 3973632 3997512 4047732 4118504 4126464 4178304 4276908 4289904 4330638 4428288 4470336 4589736 4633317 4647396 4737792 4797312 4826142 4910524 4972214 4981824 5029128 5068928 5132608 5163453 5330016 5396976 5571072 5702544 5719872 5774184 5928409 5960448 5996268 6071598 6119648 6177756 6189696 6196528 6267456 6396416 6415362 6434856 6495957 6642432 6705504 6884604 6971094 7106688 7195968 7239213 7365786 7458321 7472736 7603392 7626496 7698912 7880599 7995024 8095464 8237008 8252928 8356608 8553816 8579808 8661276 8940672 9179472 9266634 9294792 9475584 9594624 9623043 9652284 9821048 9944428 9963648 10058256 10137856 10265216 10326906 10456641 10660032 10793952 11048679 11405088 11439744 11548368 11856818 11920896 11992536 12143196 12239296 12355512 12379392 12393056 12534912 12830724 12869712 12991914 13284864 13411008 13769208 13899951 13942188 14213376 14391936 14478426 14731572 14916642 14945472 15206784 15252992 15397824 15490359 15761198 15959203 15990048 16190928 16474016 16713216 17107632 17159616 17322552 17785227 17881344 18358944 18533268 18589584 19189248 19246086 19304568 19487871 19642096 19888856 19927296 20116512 20275712 20530432 20653812 20913282 21320064 21587904 22097358 22374963 22810176 22879488 23096736 23641797 23713636 23985072 24286392 24478592 24711024 24758784 24786112 25069824 25661448 25739424 25983828 26822016 27538416 27799902 27884376 28426752 28783872 28956852 29463144 29833284 29890944 30413568 30795648 30980718 31369923 31522396 31918406 31980096 32381856 32948032 33146037 34215264 34319232 34645104 35570454 35762688 36717888 37066536 37179168 38056561 38492172 38609136 38975742 39284192 39777712 39854592 40233024 41060864 41307624 41699853 41826564 42640128 43175808 44194716 44749926 45620352 45758976 46193472 46471077 47283594 47427272 47877609 47970144 48572784 48957184 49422048 49572224 50139648 51322896 51478848 51967656 53355681 53644032 55076832 55599804 55768752 57567744 57913704 58926288 59666568 59781888 60827136 61591296 61961436 62739846 63044792 63836812 63960192 64763712 65896064 66292074 67124889 68430528 68638464 69290208 70925391 71140908 73435776 74133072 74358336 76113122 76984344 77069317 77218272 77951484 78568384 79555424 80466048 82615248 83399706 83653128 85280256 86351616 88389432 89499852 91240704 92386944 92942154 94109769 94567188 94854544 95755218 95940288 97145568 97914368 98844096 99144448 99438111 102447787 102645792 102957696 103935312 106711362 107288064 110153664 111199608 111537504 114169683 115827408 117852576 119333136 119563776 123182592 123922872 125099559 125479692 126089584 127673624 127920384 129527424 131792128 132584148 134249778 136861056 137276928 138580416 141850782 142281816 143632827 146871552 148266144 148716672 152226244 153968688 154138634 154436544 155902968 157136768 159110848 160067043 160932096 165230496 166799412 167306256 172703232 176778864 178999704 182481408 184773888 185884308 188219538 189134376 189709088 191510436 191880576 194291136 197688192 198288896 198876222 201374667 204895574 205291584 205915392 207870624 212776173 213422724 220307328 222399216 223075008 228339366 231207951 231654816 235705152 238666272 244298569 247845744 250199118 250959384 252179168 255347248 255840768 259054848 263584256 265168296 268499556 273722112 277160832 283701564 284563632 287265654 293743104 296532288 297433344 298314333 304452488 307343361 307937376 308277268 308873088 311805936 314273536 318221696 320134086 321864192 330460992 333598824 334612512 342509049 353557728 357999408 369547776 371768616 376439076 378268752 379418176 383020872 383761152 388582272 395376384 397752444 402749334 409791148 410583168 411830784 415741248 425552346 426845448 430898481 440614656 444798432 446150016 456678732 462415902 463309632 471410304 477332544 480201129 488597138 494735293 495691488 500398236 501918768 504358336 510694496 518109696 530336592 536999112 547444224 554321664 567403128 569127264 574531308 593064576 594866688 596628666 604124001 608904976 614686722 615874752 616554536 617746176 623611872 628547072 636443392 638328519 640268172 660921984 667197648 669225024 685018098 693623853 707115456 715998816 732895707 743537232 752878152 756537504 758836352 766041744 767522304 777164544 790752768 795504888 805498668 819582296 821166336 831482496 851104692 853690896 861796962 881229312 889596864 892300032 913357464 922030083 924831804 926619264 942820608 954665088 960402258 977194276 989470586 991382976 1000796472 1003837536 1008716672 1021388992 1027527147 1060673184 1073998224 1108643328 1134806256 1138254528 1149062616 1179753391 1186129152 1193257332 1208248002 1217809952 1229373444 1231749504 1233109072 1235492352 1247223744 1272886784 1276657038 1280536344 1292695443 1321843968 1334395296 1338450048 1370036196 1387247706 1414230912 1431997632 1440603387 1465791414 1484205879 1487074464 1505756304 1513075008 1517672704 1532083488 1554329088 1591009776 1610997336 1639164592 1642332672 1662964992 1702209384 1707381792 1723593924 1779193728 1784600064 1826714928 1844060166 1849663608 1853238528 1885641216 1909330176 1914985557 1920804516 1954388552 1978941172 1982765952 2001592944 2007675072 2017433344 2042777984 2055054294 2080871559 2121346368 2147996448 2198687121 2269612512 2276509056 2298125232 2359506782 2372258304 2386514664 2416496004 2435619904 2458746888 2463499008 2466218144 2494447488 2553314076 2561072688 2585390886 2643687936 2668790592 2676900096 2740072392 2766090249 2774495412 2828461824 2863995264 2881206774 2931582828 2968411758 2974148928 3011512608 3026150016 3035345408 3064166976 3082581441 3175881397 3182019552 3221994672 3278329184 3325929984 3404418768 3414763584 3447187848 3539260173 3558387456 3653429856 3688120332 3699327216 3706477056 3818660352 3829971114 3841609032 3878086329 3908777104 3957882344 3965531904 4003185888 4015350144 4034866688 4085555968 4110108588 4161743118 4242692736 4295992896 4397374242 4452617637 4539225024 4553018112 4596250464 4719013564 4773029328 4832992008 4871239808 4917493776 4926998016 4932436288 4988894976 5106628152 5122145376 5170781772 5337581184 5353800192 5480144784 5532180498 5548990824 5656923648 5727990528 5762413548 5863165656 5936823516 5948297856 6023025216 6052300032 6128333952 6165162882 6242614677 6351762794 6364039104 6443989344 6556658368 6596061363 6808837536 6829527168 6894375696 7078520346 7116774912 7306859712 7376240664 7398654432 7573255639 7659942228 7683218064 7756172658 7817554208 7915764688 7931063808 8006371776 8030700288 8171111936 8220217176 8298270747 8323486236 8485385472 8591985792 8794748484 8905235274 9078450048 9106036224 9192500928 9247744323 9438027128 9527644191 9546058656 9665984016 9742479616 9834987552 9864872576 9977789952 10213256304 10244290752 10341563544 10617780519 10675162368 10960289568 11064360996 11097981648 11455981056 11524827096 11726331312 11873647032 11896595712 12046050432 12104600064 12256667904 12330325764 12485229354 12703525588 12728078208 12887978688 13113316736 13192122726 13357852911 13617675072 13659054336 13788751392 14157040692 14613719424 14752481328 14797308864 15146511278 15319884456 15336794083 15366436128 15512345316 15635108416 15831529376 16012743552 16061400576 16440434352 16596541494 16646972472 16970770944 17183971584 17589496968 17810470548 18156900096 18385001856 18495488646 18727844031 18876054256 19055288382 19092117312 19331968032 19484959232 19669975104 19729745152 19788184089 20426512608 20488581504 20683127088 21235561038 21350324736 21920579136 22128721992 22195963296 22719766917 23049654192 23452662624 23747294064 23793191424 24092100864 24513335808 24660651528 24894812241 24970458708 25407051176 25456156416 25775957376 26226633472 26384245452 26715705822 27235350144 27318108672 27577502784 28314081384 28582932573 29227438848 29504962656 29594617728 30293022556 30639768912 30673588166 30732872256 31024690632 31270216832 31663058752 31853341557 32025487104 32880868704 33193082988 33293944944 34367943168 35178993936 35620941096 36313800192 36770003712 36990977292 37455688062 37752108512 38110576764 38184234624 38663936064 39339950208 39459490304 39576368178 40073558733 40853025216 40977163008 41366254176 42471122076 43841158272 44257443984 44391926592 45439533834 46010382249 46099308384 46905325248 47494588128 48184201728 49321303056 49789624482 49940917416 50814102352 50912312832 51551914752 52453266944 52768490904 53431411644 54470700288 55155005568 56628162768 57165865146 58454877696 59009925312 59189235456 59364552267 60586045112 61279537824 61347176332 61465744512 62049381264 62540433664 63326117504 63706683114 64050974208 65761737408 66386165976 66587889888 68159300751 70357987872 71241882192 73540007424 73981954584 74911376124 75504217024 76221153528 76368469248 77327872128 78679900416 79152736356 80147117466 81706050432 81954326016 82732508352 84942244152 85748797719 87682316544 88514887968 88783853184 90879067668 92020764498 92198616768 93810650496 94989176256 95560024671 98452323307 98642606112 99579248964 99881834832 101628204704 103103829504 105536981808 106862823288 108941400576 110310011136 113256325536 114331730292 118019850624 118378470912 118729104534 120220676199 121172090224 122559075648 122694352664 122931489024 124098762528 125080867328 126652235008 127413366228 131523474816 132772331952 133175779776 136318601502 138031146747 140715975744 142483764384 147963909168 149822752248 151008434048 152442307056 152736938496 154655744256 157359800832 158305472712 160294234932 163412100864 165465016704 169884488304 171497595438 175364633088 177029775936 177567706368 181758135336 184041528996 184397233536 187621300992 189978352512 191120049342 196904646614 197285212224 199158497928 199763669664 203256409408 204477902253 211073963616 213725646576 220620022272 226512651072 228663460584 234770924809 236039701248 237458209068 240441352398 242344180448 245118151296 245388705328 245862978048 248197525056 253304470016 254826732456 257246393157 263046949632 265544663904 266351559552 272637203004 276062293494 281431951488 284967528768 286680074013 295356969921 295927818336 299645504496 302016868096 304884614112 309311488512 316610945424 320588469864 326824201728 330930033408 339768976608 342995190876 354059551872 355135412736 363516270672 368083057992 368794467072 375242601984 379956705024 382240098684 393809293228 394570424448 398316995856 399527339328 406512818816 408955804506 414093440241 422147927232 427451293152 453025302144 457326921168 469541849618 472079402496 474916418136 480882704796 484688360896 490236302592 490777410656 496395050112 509653464912 514492786314 526093899264 531089327808 532703119104 545274406008 552124586988 562863902976 569935057536 573360148026 590713939842 591855636672 599291008992 604033736192 609769228224 613433706759 633221890848 641176939728 661860066816 679537953216 685990381752 704312774427 708119103744 727032541344 736166115984 737588934144 759913410048 764480197368 771739179471 787618586456 789140848896 796633991712 799054678656 813025637632 817911609012 828186880482 844295854464 854902586304 886070909763 906050604288 914653842336 939083699236 949832836272 961765409592 969376721792 980472605184 981554821312 992790100224 1019306929824 1028985572628 1062178655616 1065406238208 1090548812016 1104249173976 1125727805952 1139870115072 1146720296052 1181427879684 1183711273344 1198582017984 1219538456448 1226867413518 1242280320723 1266443781696 1282353879456 1359075906432 1371980763504 1408625548854 1416238207488 1454065082688 1472332231968 1528960394736 1543478358942 1575237172912 1578281697792 1593267983424 1598109357312 1626051275264 1635823218024 1656373760964 1688591708928 1709805172608 1772141819526 1812101208576 1829307684672 1840301120277 1878167398472 1899665672544 1923530819184 1938753443584 1963109642624 1985580200448 2038613859648 2057971145256 2112938323281 2124357311232 2181097624032 2208498347952 2279740230144 2293440592104 2362855759368 2367422546688 2397164035968 2439076912896 2453734827036 2484560641446 2532887563392 2564707758912 2658212729289 2718151812864 2743961527008 2817251097708 2908130165376 2944664463936 3052022022517 3057920789472 3086956717884 3150474345824 3186535966848 3196218714624 3271646436048 3312747521928 3377183417856 3419610345216 3544283639052 3658615369344 3680602240554 3726840962169 3756334796944 3799331345088 3847061638368 3877506887168 3926219285248 4077227719296 4115942290512 4225876646562 4248714622464 4362195248064 4416996695904 4586881184208 4725711518736 4734845093376 4794328071936 4878153825792 4907469654072 4969121282892 5065775126784 5129415517824 5316425458578 5436303625728 5487923054016 5634502195416 5816260330752 5889328927872 6104044045034 6115841578944 6173913435768 6300948691648 6338814969843 6373071933696 6543292872096 6625495043856 6839220690432 7088567278104 7317230738688 7361204481108 7453681924338 7512669593888 7598662690176 7694123276736 7852438570496 7974638187867 8154455438592 8231884581024 8451753293124 8724390496128 8833993391808 9156066067551 9173762368416 9451423037472 9588656143872 9814939308144 9938242565784 10131550253568 10258831035648 10632850917156 10975846108032 11269004390832 11632520661504 11778657855744 12208088090068 12231683157888 12347826871536 12601897383296 12677629939686 12746143867392 13086585744192 13250990087712 14177134556208 14634461477376 14722408962216 14907363848676 15025339187776 15197325380352 15388246553472 15949276375734 16308910877184 16463769162048 16903506586248 17448780992256 17667986783616 18312132135102 18347524736832 18902846074944 19016444909529 19629878616288 19876485131568 20517662071296 21265701834312 21951692216064 22538008781664 23557315711488 23923914563601 24416176180136 24463366315776 24695653743072 25203794766592 25355259879372 26173171488384 26501980175424 27468198202653 28354269112416 29444817924432 29814727697352 30050678375552 30394650760704 30776493106944 31898552751468 32927538324096 33807013172496 34897561984512 35335973567232 36624264270204 36695049473664 37805692149888 38032889819058 39259757232576 39752970263136 42531403668624 43903384432128 45076017563328 47847829127202 48832352360272 48926732631552 49391307486144 50407589533184 50710519758744 52346342976768 53003960350848 54936396405306 56708538224832 57049334728587 58889635848864 59629455394704 60101356751104 61552986213888 63797105502936 65855076648192 67614026344992 70671947134464 73248528540408 73390098947328 75611384299776 76065779638116 78519514465152 79505940526272 82404594607959 85062807337248 90152035126656 95695658254404 97664704720544 98782614972288 101421039517488 104692685953536 106007920701696 109872792810612 113417076449664 114098669457174 117779271697728 119258910789408 120202713502208 127594211005872 131710153296384 135228052689984 146497057080816 146780197894656 151222768599552 152131559276232 157039028930304 159011881052544 164809189215918 170125614674496 180304070253312 191391316508808 195329409441088 197565229944576 202842079034976 212015841403392 219745585621224 226834152899328 228197338914348 235558543395456 238517821578816 247213783823877 255188422011744 270456105379968 292994114161632 304263118552464 314078057860608 318023762105088 329618378431836 340251229348992 360608140506624 382782633017616 390658818882176 395130459889152 405684158069952 439491171242448 453668305798656 456394677828696 471117086790912 477035643157632 494427567647754 510376844023488 540912210759936 585988228323264 608526237104928 636047524210176 659236756863672 680502458697984 741641351471631 765565266035232 781317637764352 811368316139904 878982342484896 912789355657392 942234173581824 954071286315264 988855135295508 1020753688046976 1081824421519872 1171976456646528 1217052474209856 1318473513727344 1361004917395968 1483282702943262 1531130532070464 1562635275528704 1622736632279808 1757964684969792 1825578711314784 1908142572630528 1977710270591016 2041507376093952 2343952913293056 2434104948419712 2636947027454688 2966565405886524 3062261064140928 3245473264559616 3515929369939584 3651157422629568 3955420541182032 4083014752187904 4687905826586112 4868209896839424 5273894054909376 5933130811773048 6124522128281856 7031858739879168 7302314845259136 7910841082364064 9736419793678848 10547788109818752 11866261623546096 12249044256563712 14063717479758336 14604629690518272 15821682164728128 21095576219637504 23732523247092192 29209259381036544 31643364329456256 42191152439275008 47465046494184384 63286728658912512 94930092988368768 126573457317825024 189860185976737536 379720371953475072
- Sum of all divisors σ(n): 1271092682328268800
- Sum of proper divisors (its aliquot sum) s(n): 891372310374793728
- 379720371953475072 is an abundant number, because the sum of its proper divisors (891372310374793728) is greater than itself. Its abundance is 511651938421318656
Bases of 379720371953475072
- Binary: 101010001010000100110101010100111000100010000011110000000002
- Hexadecimal: 0x54509AA9C441E00
- Base-36: 2VUVMYORMO00
Squares and roots of 379720371953475072
- 379720371953475072 squared (3797203719534750722) is 144187560876485458067298136925405184
- 379720371953475072 cubed (3797203719534750723) is 54750954247083388301630746758593727744219830443573248
-
The
square root of 379720371953475072 is 616214550.2610880999 -
The
cube root of 379720371953475072 is 724137.9349850993
Scales and comparisons
How big is 379720371953475072?- 379,720,371,953,475,072 seconds is equal to 12,073,933,275 years, 46 weeks, 2 days, 11 hours, 31 minutes, 12 seconds.
-
To count from 1 to 379,720,371,953,475,072 would take you about thirty-six billion, two hundred twenty-one million, seven hundred ninety-nine thousand, eight hundred twenty-seven 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 379720371953475072 cubic inches would be around 60344.8 feet tall.
Recreational maths with 379720371953475072
- 379720371953475072 backwards is 270574359173027973
- 379720371953475072 is a
Harshad number . - The number of decimal digits it has is: 18
- The sum of 379720371953475072's digits is 81
- 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 379720371953475072 - Facts about the integer". Numbermatics.com. 2024. Web. 4 May 2024.
APA style:
Numbermatics. (2024). Number 379720371953475072 - Facts about the integer. Retrieved 4 May 2024, from https://numbermatics.com/n/379720371953475072/
Chicago style:
Numbermatics. 2024. "Number 379720371953475072 - Facts about the integer". https://numbermatics.com/n/379720371953475072/
The information we have on file for 379720371953475072 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 379720371953475072, math, Factors of 379720371953475072, curriculum, school, college, exams, university, Prime factorization of 379720371953475072, STEM, science, technology, engineering, physics, economics, calculator, three hundred seventy-nine quadrillion, seven hundred twenty trillion, three hundred seventy-one billion, nine hundred fifty-three million, four hundred seventy-five thousand and seventy-two.