11893987566880384
11,893,987,566,880,384 is an even composite number composed of eight prime numbers multiplied together.
What does the number 11893987566880384 look like?
This visualization shows the relationship between its 8 prime factors (large circles) and 2048 divisors.
11893987566880384 is an even composite number. It is composed of eight distinct prime numbers multiplied together. It has a total of two thousand and forty-eight divisors.
Prime factorization of 11893987566880384:
27 × 73 × 17 × 31 × 61 × 67 × 73 × 1723
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 7 × 7 × 17 × 31 × 61 × 67 × 73 × 1723)See below for interesting mathematical facts about the number 11893987566880384 from the Numbermatics database.
Names of 11893987566880384
- Cardinal: 11893987566880384 can be written as Eleven quadrillion, eight hundred ninety-three trillion, nine hundred eighty-seven billion, five hundred sixty-six million, eight hundred eighty thousand, three hundred eighty-four.
Scientific notation
- Scientific notation: 1.1893987566880384 × 1016
Factors of 11893987566880384
Divisors of 11893987566880384
- Number of divisors d(n): 2048
-
Complete list of divisors:
1 2 4 7 8 14 16 17 28 31 32 34 49 56 61 62 64 67 68 73 98 112 119 122 124 128 134 136 146 196 217 224 238 244 248 268 272 292 343 392 427 434 448 469 476 488 496 511 527 536 544 584 686 784 833 854 868 896 938 952 976 992 1022 1037 1054 1072 1088 1139 1168 1241 1372 1519 1568 1666 1708 1723 1736 1876 1891 1904 1952 1984 2044 2074 2077 2108 2144 2176 2263 2278 2336 2482 2744 2989 3038 3136 3283 3332 3416 3446 3472 3577 3689 3752 3782 3808 3904 3968 4087 4088 4148 4154 4216 4288 4453 4526 4556 4672 4891 4964 5488 5831 5978 6076 6272 6566 6664 6832 6892 6944 7154 7259 7378 7504 7564 7616 7808 7973 8174 8176 8296 8308 8432 8576 8687 8906 9052 9112 9344 9782 9928 10633 10976 11662 11956 12061 12152 13132 13237 13328 13664 13784 13888 14308 14518 14539 14756 15008 15128 15232 15841 15946 16348 16352 16592 16616 16864 17374 17812 18104 18224 19564 19856 20923 21266 21952 22981 23324 23912 24122 24304 25039 25823 26264 26474 26656 27328 27568 27776 28609 28616 29036 29078 29291 29512 30016 30256 31171 31682 31892 32147 32696 32704 33184 33232 33728 34237 34748 35309 35624 36208 36448 38471 39128 39712 41846 42532 43904 45962 46648 47824 48244 48608 50078 50813 51646 52528 52948 53312 53413 54656 55136 55811 57218 57232 58072 58156 58582 59024 60032 60512 60809 62342 63364 63784 64294 65392 65408 66368 66464 67456 68474 69479 69496 70618 71248 72416 72896 75701 76942 78256 79424 83147 83692 84427 85064 91924 92659 93296 95648 96488 97216 100156 101626 101773 103292 105056 105103 105896 106624 106826 110272 110887 111622 114436 114464 115441 116144 116312 117164 118048 121024 121618 124684 125779 126697 126728 127568 128588 130784 132736 132928 136948 138043 138958 138992 141236 142496 144832 145792 151402 151621 153884 156512 158848 166294 167384 168854 170128 180761 183848 185318 186592 191296 192976 194432 200263 200312 203252 203546 205037 206584 210112 210206 211792 213652 218197 220544 221774 223244 225029 228872 228928 230882 232288 232624 234328 236096 239659 242048 243236 247163 249368 251558 253394 253456 255136 257176 261568 265856 269297 273896 276086 277916 277984 282472 284992 289664 298351 302804 303242 307768 313024 332588 334768 337708 340256 355691 361522 367696 370636 373184 373891 382592 385952 390677 400526 400624 406504 407092 410074 413168 420224 420412 423584 425663 427304 436394 443548 446488 450058 457744 457856 461764 464576 465248 468656 472192 479318 486353 486472 494326 498736 503116 506788 506912 510272 514352 523136 529907 538594 547792 552172 555832 555968 564944 569984 582029 590989 596702 605608 606484 615536 626048 648613 665176 669536 675416 680512 711382 712411 723044 735392 735721 741272 746368 747782 771904 776209 781354 801052 801248 808087 813008 814184 820148 826336 840824 847168 851326 854608 872788 880453 886879 887096 892976 900116 908021 915488 923528 929152 930496 937312 958636 966301 972706 972944 988652 997472 1006232 1013576 1013824 1020544 1028704 1059814 1061347 1077188 1095584 1104344 1111664 1111936 1129888 1164058 1181978 1193404 1211216 1212968 1231072 1297226 1330352 1339072 1350832 1361024 1401841 1422764 1424822 1435259 1446088 1470784 1471442 1482544 1495564 1527379 1543808 1552418 1562708 1575203 1602104 1602496 1616174 1626016 1628368 1640296 1652672 1677613 1681648 1694336 1702652 1709216 1730141 1745576 1760906 1773758 1774192 1785952 1786751 1800232 1816042 1830976 1847056 1860992 1874624 1885079 1917272 1932602 1945412 1945888 1962497 1977304 1994944 2012464 2027152 2027648 2057408 2088457 2119628 2122694 2138243 2153849 2154376 2191168 2208688 2223328 2259776 2328116 2346731 2363956 2386808 2422432 2425936 2462144 2577557 2594452 2617237 2660704 2678144 2701664 2803682 2845528 2849644 2870518 2892176 2941568 2942884 2965088 2991128 3054758 3104836 3125416 3150406 3204208 3204992 3232348 3252032 3256736 3258193 3280592 3305344 3355226 3363296 3404471 3405304 3418432 3460282 3491152 3521812 3547516 3548384 3571904 3573502 3578671 3600464 3632084 3661952 3694112 3709349 3749248 3770158 3834544 3865204 3890824 3891776 3899149 3924994 3954608 3989888 4024928 4054304 4074203 4114816 4176914 4239256 4245388 4276486 4307698 4308752 4382336 4417376 4446656 4519552 4656232 4693462 4727912 4773616 4844864 4851872 4924288 5071967 5150047 5155114 5188904 5234474 5321408 5403328 5607364 5656609 5691056 5699288 5741036 5784352 5885768 5930176 5982256 6109516 6163171 6208153 6209672 6250832 6300812 6356147 6408416 6464696 6504064 6513472 6516386 6561184 6710452 6726592 6764107 6808942 6810608 6836864 6920564 6982304 7041901 7043624 7095032 7096768 7143808 7147004 7157342 7200928 7264168 7388224 7418698 7429429 7540316 7669088 7672519 7730408 7781648 7783552 7798298 7849988 7909216 8049856 8108608 8148406 8353828 8427193 8478512 8490776 8552972 8615396 8617504 8834752 8893312 9248881 9312464 9386924 9455824 9547232 9689728 9703744 10046813 10143934 10300094 10310228 10377808 10468948 10642816 10806656 11026421 11214728 11313218 11382112 11398576 11482072 11568704 11771536 11860352 11964512 12110987 12219032 12326342 12416306 12419344 12501664 12507257 12601624 12712294 12816832 12929392 13026944 13032772 13122368 13195553 13420904 13453184 13528214 13617884 13621216 13737479 13841128 13964608 14083802 14087248 14190064 14193536 14294008 14314684 14401856 14528336 14619199 14776448 14837396 14858858 14967701 15076943 15080632 15338176 15345038 15460816 15563296 15596596 15699976 15818432 16099712 16217216 16296812 16427117 16707656 16854386 16957024 16981552 17105944 17230792 17235008 17669504 18042899 18320659 18497762 18624928 18773848 18911648 19094464 19407488 20093626 20287868 20600188 20620456 20755616 20937896 22052842 22429456 22626436 22764224 22797152 22807351 22964144 23137408 23543072 23831297 23929024 24221974 24438064 24652684 24832612 24838688 25003328 25014514 25050697 25203248 25424588 25633664 25858784 25965443 26065544 26244736 26391106 26841808 27056428 27235768 27242432 27294043 27474958 27682256 27929216 28167604 28174496 28380128 28519421 28588016 28629368 28803712 29056672 29238398 29674792 29717716 29935402 30153886 30161264 30676352 30690076 30921632 31126592 31193192 31399952 31636864 32593624 32854234 33415312 33708772 33914048 33963104 34211888 34461584 34470016 35503769 36050329 36085798 36641318 36995524 37249856 37547696 37823296 38188928 39596263 40187252 40575736 41200376 41240912 41511232 41875792 43142197 43457071 44105684 44493029 44858912 45252872 45528448 45594304 45614702 45928288 47086144 47348749 47662594 47858048 48443948 48876128 49293307 49305368 49665224 49677376 50006656 50029028 50101394 50406496 50849176 51717568 51930886 52006003 52131088 52782212 53683616 53707633 54112856 54471536 54484864 54588086 54949916 55364512 55389281 56335208 56348992 56760256 57038842 57176032 57258736 58113344 58476796 58990351 59349584 59435432 59870804 60307772 60322528 60837407 61380152 61843264 62253184 62386384 62799904 64742167 65187248 65708468 66285533 66830624 67417544 67828096 67926208 68423776 68923168 71007538 72100658 72171596 73282636 73991048 74499712 75095392 75646592 79192526 80374504 81151472 82400752 82481824 83022464 83751584 86284394 86914142 87550799 88211368 88986058 89717824 90505744 91188608 91229404 91856576 94172288 94697498 95325188 96162353 96887896 97752256 98586614 98610736 99330448 99354752 100058056 100202788 100812992 101698352 102334393 103435136 103861772 104012006 104262176 104773907 105538601 105564424 107367232 107415266 108225712 108943072 109176172 109899832 110729024 110778562 112670416 112697984 113520512 114077684 114352064 114517472 114989819 116226688 116953592 117980702 118699168 118870864 119712317 119741608 120615544 120645056 121674814 122760304 123686528 124772768 125599808 126300293 129484334 130374496 130432823 131416936 132571066 133661248 134835088 135852416 136847552 137846336 142015076 143262281 144201316 144343192 146565272 147982096 150190784 157230977 158385052 159651457 160749008 162302944 164801504 164963648 167503168 172568788 173828284 175101598 175354879 176422736 177972116 179435648 181011488 182458808 183713152 189394996 190650376 191058301 192324706 193775792 195504512 197173228 197221472 198660896 200116112 200405576 201625984 203396704 204668786 207723544 208024012 208524352 209547814 211077202 211128848 214734464 214830532 216451424 217886144 218298931 218352344 219799664 221458048 221557124 225340832 228155368 228704128 229034944 229979638 233907184 235961404 237398336 237741728 237848089 239424634 239483216 241231088 241290112 243349628 245520608 248526383 249545536 251199616 252600586 258968668 260748992 260865646 261242983 262833872 265142132 267322496 269670176 273695104 275692672 284030152 286524562 288402632 288686384 293130544 295964192 300381568 311451203 314461954 316770104 319302914 321498016 324605888 329603008 329927296 335006336 345053149 345137576 347656568 350203196 350709758 352845472 355944232 362022976 364917616 375953431 378789992 381300752 382116602 384649412 387551584 387724967 394346456 394442944 397321792 400232224 400811152 406793408 409337572 412932457 415447088 416048024 417048704 419095628 422154404 422257696 425861849 429661064 432902848 435772288 436597862 436704688 439599328 443114248 450681664 453195169 456310736 458069888 459959276 463998731 467814368 471922808 474796672 475483456 475696178 478849268 478966432 482462176 486699256 491041216 497052766 499091072 505201172 514058773 517937336 521497984 521731292 522485966 525667744 530284264 539340352 568060304 573049124 576805264 577372768 586261088 591928384 612855593 622902406 628923908 633540208 638605828 642996032 649211776 659206016 673136471 690106298 690275152 695313136 700406392 701419516 705690944 711888464 724045952 729835232 733417349 738770207 751906862 757579984 762601504 764233204 769298824 775103168 775449934 788692912 788885888 794643584 800464448 801622304 804928733 813586816 818675144 825864914 830894176 832096048 837986219 838191256 844308808 844515392 851723698 859322128 865805696 873195724 873409376 879198656 884102051 886228496 901363328 906390338 912621472 913029761 919918552 927997462 935628736 943845616 950966912 951392356 957698536 957932864 964924352 973398512 982082432 994105532 1002835967 1010402344 1028117546 1035874672 1043462584 1044971932 1051335488 1060568528 1078680704 1100616839 1117560199 1136120608 1146098248 1153610528 1154745536 1172522176 1183856768 1225711186 1227484153 1245804812 1257847816 1267080416 1277211656 1285992064 1337408107 1346272942 1380212596 1380550304 1390626272 1400812784 1402839032 1411381888 1423776928 1459670464 1466834698 1477540414 1503813724 1515159968 1525203008 1528092517 1528466408 1538597648 1550206336 1550899868 1577385824 1600928896 1603244608 1609857466 1637350288 1651729828 1661788352 1664192096 1664936623 1675972438 1676382512 1688617616 1689030784 1703447396 1718644256 1739684681 1746391448 1746818752 1758397312 1768204102 1772456992 1812780676 1825242944 1826059522 1828700881 1839837104 1855994924 1871257472 1887691232 1902784712 1915397072 1915865728 1929848704 1946797024 1988211064 2005671934 2020804688 2056235092 2071749344 2086925168 2089943864 2102670976 2121137056 2201233678 2235120398 2272241216 2292196496 2307221056 2309491072 2345044352 2415372043 2451422372 2454968306 2491609624 2515695632 2534160832 2554423312 2631674017 2674816214 2692545884 2714074769 2760425192 2761100608 2781252544 2801625568 2805678064 2847553856 2890527199 2919340928 2933669396 2955080828 2981032943 3007627448 3030319936 3050406016 3056185034 3056932816 3077195296 3101799736 3154771648 3172366183 3206489216 3219714932 3247991117 3274700576 3303459656 3323576704 3328384192 3329873246 3351944876 3352765024 3377235232 3406894792 3437288512 3479369362 3492782896 3493637504 3536408204 3544913984 3598411411 3625561352 3650485888 3652119044 3657401762 3679674208 3711081827 3711989848 3775382464 3805569424 3830794144 3893594048 3976422128 4011343868 4041609376 4043417513 4112470184 4143498688 4173850336 4179887728 4242274112 4402467356 4441130711 4470240796 4544482432 4584392992 4614442112 4830744086 4902844744 4909936612 4983219248 5031391264 5068321664 5108846624 5263348034 5349632428 5385091768 5428149538 5520850384 5522201216 5562505088 5603251136 5611356128 5695107712 5781054398 5865903533 5867338792 5910161656 5962065886 6015254896 6060639872 6112370068 6113865632 6154390592 6203599472 6309543296 6344732366 6391208327 6439429864 6495982234 6549401152 6606919312 6656768384 6659746492 6703889752 6705530048 6754470464 6813789584 6874577024 6958738724 6985565792 7019851769 7072816408 7089827968 7196822822 7251122704 7304238088 7314803524 7359348416 7422163654 7423979696 7550764928 7611138848 7661588288 7704317873 7787188096 7952844256 8022687736 8083218752 8086835026 8224940368 8286997376 8347700672 8359775456 8484548224 8738999141 8804934712 8882261422 8940481592 9168785984 9661488172 9805689488 9819873224 9966438496 10062782528 10217693248 10526696068 10696647619 10699264856 10770183536 10856299076 11041700768 11206502272 11222712256 11562108796 11654556361 11731807066 11734677584 11820323312 11924131772 12030509792 12224740136 12227731264 12308781184 12407198944 12689464732 12782416654 12800906167 12878859728 12991964468 13098802304 13213838624 13319492984 13407779504 13411060096 13508940928 13627579168 13917477448 13971131584 14039703538 14145632816 14393645644 14502245408 14608476176 14629607048 14718696832 14844327308 14847959392 15222277696 15323176576 15408635746 15905688512 15935821963 16045375472 16166437504 16173670052 16449880736 16695401344 16719550912 17477998282 17609869424 17764522844 17880963184 18337571968 18998523383 19322976344 19611378976 19639746448 19932876992 20125565056 20435386496 20867230601 21053392136 21393295238 21398529712 21540367072 21712598152 22083401536 22445424512 22735937819 23124217592 23309112722 23463614132 23469355168 23640646624 23848263544 24061019584 24449480272 24455462528 24814397888 25188879877 25378929464 25564833308 25601812334 25757719456 25977572789 25983928936 26427677248 26638985968 26815559008 27255158336 27834954896 27942263168 28079407076 28291265632 28303922591 28787291288 29004490816 29216952352 29259214096 29688654616 29695918784 30444555392 30817271492 31087914977 31811377024 31871643926 32090750944 32347340104 32899761472 33439101824 34955996564 35219738848 35529045688 35761926368 37997046766 38645952688 39222757952 39279492896 39865753984 41061324731 41734461202 42106784272 42786590476 42797059424 43080734144 43425196304 44166803072 44738458289 45471875638 46248435184 46618225444 46927228264 46938710336 47281293248 47696527088 48122039168 48898960544 49138962383 49628795776 50377759754 50757858928 51129666616 51203624668 51515438912 51955145578 51967857872 52855354496 53277971936 53631118016 53930225111 54510316672 55669909792 56158814152 56582531264 56607845182 57574582576 58008981632 58433904704 58518428192 59377309232 59391837568 61172993987 61634542984 62175829954 63743287852 64181501888 64694680208 65799522944 69911993128 70439477696 71058091376 71523852736 74876533333 75994093532 77291905376 78445515904 78558985792 81581894527 82122649462 83468922404 84213568544 85573180952 85594118848 86161468288 86850392608 89476916578 89606343169 90943751276 92496870368 93236450888 93854456528 93877420672 94562586496 95393054176 97797921088 98277924766 100755519508 101515717856 102259333232 102407249336 103030877824 103910291156 103935715744 106555943872 107262236032 107860450222 111339819584 111550753741 112317628304 113165062528 113215690364 115149165152 116867809408 117036856384 118754618464 122345987974 123269085968 124351659908 127486575704 128363003776 129389360416 139823986256 140878955392 142116182752 143047705472 149753066666 151988187064 154583810752 157117971584 163163789054 164245298924 166937844808 168427137088 171146361904 171188237696 173700785216 176322159139 178953833156 179212686338 181843009523 181887502552 184993740736 186472901776 187708913056 190786108352 195595842176 196555849532 198127458137 201511039016 203031435712 204518666464 204814498672 207820582312 207871431488 213111887744 215720900444 217615404839 222679639168 223101507482 224635256608 226431380728 230298330304 234073712768 237509236928 244691975948 246538171936 248703319816 254973151408 258778720832 270908973371 279647972512 284232365504 299506133332 303976374128 309167621504 326327578108 328490597848 333875689616 336854274176 342292723808 347401570432 352644318278 357907666312 358425372676 363686019046 363775005104 369987481472 372945803552 375417826112 381572216704 393111699064 396254916274 403022078032 406062871424 409037332928 409628997344 415641164624 415742862976 428210957909 431441800888 435230809678 446203014964 449270513216 452862761456 460596660608 475018473856 489383951896 493076343872 497406639632 509946302816 517557441664 541817946742 559295945024 568464731008 599012266664 607952748256 652655156216 656981195696 667751379232 684585447616 705288636556 715815332624 716850745352 727372038092 727550010208 745891607104 750835652224 780855276187 786223398128 792509832548 806044156064 818074665856 819257994688 831282329248 856421915818 862883601776 870461619356 892406029928 898541026432 905725522912 978767903792 986152687744 994813279264 1019892605632 1083635893484 1118591890048 1198024533328 1215905496512 1272901066661 1305310312432 1313962391392 1335502758464 1369170895232 1386892206959 1410577273112 1431630665248 1433701490704 1454744076184 1455100020416 1491783214208 1523307833873 1561710552374 1572446796256 1585019665096 1612088312128 1638515989376 1662564658496 1712843831636 1725767203552 1740923238712 1784812059856 1811451045824 1896362813597 1957535807584 1989626558528 2039785211264 2167271786968 2396049066656 2431810993024 2545802133322 2610620624864 2627924782784 2671005516928 2773784413918 2821154546224 2863261330496 2867402981408 2909488152368 2910200040832 2997476705363 3046615667746 3123421104748 3144893592512 3170039330192 3224176624256 3325129316992 3425687663272 3451534407104 3481846477424 3569624119712 3622902091648 3792725627194 3915071615168 3979253117056 4334543573936 4792098133312 5091604266644 5221241249728 5255849565568 5465986933309 5547568827836 5642309092448 5726522660992 5734805962816 5818976304736 5994953410726 6093231335492 6246842209496 6289787185024 6340078660384 6851375326544 6903068814208 6963692954848 7139248239424 7585451254388 7830143230336 8669087147872 9584196266624 10183208533288 10442482499456 10931973866618 11095137655672 11284618184896 11469611925632 11637952609472 11989906821452 12186462670984 12493684418992 12680157320768 13274539695179 13702750653088 13927385909696 14278496478848 15170902508776 17338174295744 20366417066576 21863947733236 22190275311344 22569236369792 23275905218944 23979813642904 24372925341968 24987368837984 25360314641536 26549079390358 27405501306176 27854771819392 30341805017552 34676348591488 40732834133152 43727895466472 44380550622688 47959627285808 48745850683936 49974737675968 53098158780716 54811002612352 60683610035104 81465668266304 87455790932944 88761101245376 92921777866253 95919254571616 97491701367872 99949475351936 106196317561432 121367220070208 162931336532608 174911581865888 177522202490752 185843555732506 191838509143232 194983402735744 212392635122864 242734440140416 349823163731776 371687111465012 383677018286464 424785270245728 699646327463552 743374222930024 849570540491456 1486748445860048 1699141080982912 2973496891720096 5946993783440192 11893987566880384
- Sum of all divisors σ(n): 31600375160832000
- Sum of proper divisors (its aliquot sum) s(n): 19706387593951616
- 11893987566880384 is an abundant number, because the sum of its proper divisors (19706387593951616) is greater than itself. Its abundance is 7812400027071232
Bases of 11893987566880384
- Binary: 1010100100000110000100110001111110001100000110100000002
- Hexadecimal: 0x2A4184C7E30680
- Base-36: 3942EGFNTZ4
Squares and roots of 11893987566880384
- 11893987566880384 squared (118939875668803842) is 141466940241105157055385763987456
- 11893987566880384 cubed (118939875668803843) is 1682606028352315010832460572789260984414428463104
-
The
square root of 11893987566880384 is 109059559.7225680347 -
The
cube root of 11893987566880384 is 228266.6647981395
Scales and comparisons
How big is 11893987566880384?- 11,893,987,566,880,384 seconds is equal to 378,192,014 years, 5 weeks, 4 days, 4 hours, 33 minutes, 4 seconds.
-
To count from 1 to 11,893,987,566,880,384 would take you about one billion, one hundred thirty-four million, five hundred seventy-six thousand and forty-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 11893987566880384 cubic inches would be around 19022.2 feet tall.
Recreational maths with 11893987566880384
- 11893987566880384 backwards is 48308866578939811
- The number of decimal digits it has is: 17
- The sum of 11893987566880384's digits is 94
- 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 11893987566880384 - Facts about the integer". Numbermatics.com. 2024. Web. 25 June 2024.
APA style:
Numbermatics. (2024). Number 11893987566880384 - Facts about the integer. Retrieved 25 June 2024, from https://numbermatics.com/n/11893987566880384/
Chicago style:
Numbermatics. 2024. "Number 11893987566880384 - Facts about the integer". https://numbermatics.com/n/11893987566880384/
The information we have on file for 11893987566880384 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 11893987566880384, math, Factors of 11893987566880384, curriculum, school, college, exams, university, Prime factorization of 11893987566880384, STEM, science, technology, engineering, physics, economics, calculator, eleven quadrillion, eight hundred ninety-three trillion, nine hundred eighty-seven billion, five hundred sixty-six million, eight hundred eighty thousand, three hundred eighty-four.