295336194730917984
295,336,194,730,917,984 is an even composite number composed of six prime numbers multiplied together.
295336194730917984 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one thousand, nine hundred forty-four divisors.
Prime factorization of 295336194730917984:
25 × 33 × 72 × 732 × 972 × 3732
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 7 × 7 × 73 × 73 × 97 × 97 × 373 × 373)See below for interesting mathematical facts about the number 295336194730917984 from the Numbermatics database.
Names of 295336194730917984
- Cardinal: 295336194730917984 can be written as Two hundred ninety-five quadrillion, three hundred thirty-six trillion, one hundred ninety-four billion, seven hundred thirty million, nine hundred seventeen thousand, nine hundred eighty-four.
Scientific notation
- Scientific notation: 2.95336194730917984 × 1017
Factors of 295336194730917984
Divisors of 295336194730917984
- Number of divisors d(n): 1944
-
Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 49 54 56 63 72 73 84 96 97 98 108 112 126 144 146 147 168 189 194 196 216 219 224 252 288 291 292 294 336 373 378 388 392 432 438 441 504 511 582 584 588 657 672 679 746 756 776 784 864 873 876 882 1008 1022 1119 1164 1168 1176 1314 1323 1358 1492 1512 1533 1552 1568 1746 1752 1764 1971 2016 2037 2044 2238 2328 2336 2352 2611 2619 2628 2646 2716 2984 3024 3066 3104 3357 3492 3504 3528 3577 3942 4074 4088 4476 4599 4656 4704 4753 5222 5238 5256 5292 5329 5432 5968 6048 6111 6132 6714 6984 7008 7056 7081 7154 7833 7884 8148 8176 8952 9198 9312 9409 9506 10071 10444 10476 10512 10584 10658 10731 10864 11936 12222 12264 13428 13797 13968 14112 14162 14259 14308 15666 15768 15987 16296 16352 17904 18277 18333 18396 18818 19012 20142 20888 20952 21024 21168 21243 21316 21462 21728 23499 24444 24528 26856 27229 27594 27936 28227 28324 28518 28616 31332 31536 31974 32193 32592 35808 36181 36554 36666 36792 37303 37636 38024 40284 41776 41904 42336 42486 42632 42777 42924 46998 47961 48888 49056 49567 53712 54458 54831 55188 56454 56648 57036 57232 62664 63072 63729 63948 64386 65184 65863 70497 72362 73108 73332 73584 74606 75272 76048 80568 81687 83552 83808 84681 84972 85264 85554 85848 93996 95922 96579 97776 99134 107424 108543 108916 109662 110376 111909 112908 113296 114072 114464 125328 127458 127896 128331 128772 131726 139129 140994 143883 144724 146216 146664 147168 148701 149212 150544 152096 161136 163374 164493 169362 169944 170528 171108 171696 187992 190603 191187 191844 193158 195552 197589 198268 217086 217832 219324 220752 223818 225816 226592 228144 245061 250656 253267 254043 254916 255792 256662 257544 261121 263452 278258 281988 287766 289448 292432 293328 297402 298424 301088 322272 325629 326748 328986 335727 338724 339888 342216 343392 346969 375984 381206 382374 383688 386316 395178 396536 417387 434172 435664 438648 441504 446103 447636 451632 456288 461041 490122 493479 506534 508086 509832 511584 513324 515088 516913 522242 526904 556516 563976 571809 575532 578896 584864 586656 592767 594804 596848 651258 653496 657972 671454 677448 679776 684432 686857 693938 735183 751968 759801 762412 764748 767376 772632 783363 790356 793072 834774 868344 871328 877296 892206 895272 903264 922082 973903 976887 980244 986958 1007181 1013068 1016172 1019664 1026648 1030176 1033826 1040907 1044484 1053808 1113032 1127952 1143618 1151064 1157792 1185534 1189608 1193696 1252161 1302516 1306992 1315944 1334221 1338309 1342908 1354896 1368864 1373714 1383123 1387876 1470366 1519602 1524824 1529496 1534752 1545264 1550739 1566726 1580712 1586144 1669548 1715427 1736688 1754592 1772869 1778301 1784412 1790544 1844164 1947806 1953774 1960488 1973916 1987717 2014362 2026136 2032344 2039328 2053296 2060571 2067652 2081814 2088968 2107616 2226064 2255904 2279403 2287236 2302128 2350089 2371068 2379216 2504322 2605032 2613984 2631888 2641213 2668442 2676618 2685816 2709792 2747428 2766246 2775752 2921709 2940732 3039204 3049648 3058992 3090528 3101478 3122721 3133452 3161424 3339096 3430854 3473376 3509557 3545738 3556602 3568824 3581088 3618391 3688328 3756483 3895612 3907548 3920976 3947832 3975434 4002663 4028724 4052272 4064688 4106592 4121142 4135304 4149369 4163628 4177936 4452128 4558806 4574472 4604256 4652217 4700178 4742136 4758432 4807999 5008644 5146281 5210064 5263776 5282426 5318607 5336884 5353236 5371632 5494856 5532492 5551504 5843418 5881464 5963151 6078408 6099296 6117984 6181713 6202956 6245442 6266904 6322848 6678192 6817321 6838209 6861708 7019114 7050267 7091476 7113204 7137648 7236782 7376656 7512966 7791224 7815096 7841952 7895664 7923639 7950868 8005326 8057448 8104544 8129376 8242284 8270608 8298738 8327256 8355872 8765127 9117612 9148944 9304434 9368163 9400356 9484272 9615998 10017288 10156417 10292562 10420128 10528671 10564852 10637214 10673768 10706472 10743264 10855173 10989712 11064984 11103008 11686836 11762928 11926302 12007989 12156816 12363426 12405912 12448107 12490884 12533808 13356384 13495513 13634642 13676418 13723416 13914019 13956651 14038228 14100534 14182952 14226408 14275296 14423997 14473564 14753312 15025932 15582448 15630192 15791328 15847278 15901736 15955821 16010652 16114896 16484568 16541216 16597476 16654512 17530254 17889453 18235224 18297888 18488491 18545139 18608868 18736326 18800712 18968544 19231996 20034576 20312834 20451963 20585124 21057342 21129704 21274428 21347536 21412944 21710346 21979424 22129968 23373672 23525856 23770917 23852604 24015978 24313632 24566899 24726852 24811824 24896214 24981768 25067616 25328737 26295381 26991026 27269284 27352836 27446832 27828038 27913302 28076456 28201068 28365904 28452816 28847994 28947128 30051864 30469251 31164896 31260384 31586013 31694556 31803472 31911642 32021304 32229792 32565519 32969136 33194952 33309024 33655993 35060508 35778906 36023967 36470448 36976982 37090278 37217736 37472652 37601424 38463992 40069152 40486539 40625668 40903926 41170248 41742057 42114684 42259408 42548856 42695072 42825888 43271991 43420692 44259936 46747344 47541834 47705208 47867463 48031956 49133798 49453704 49623648 49792428 49963536 50140561 50657474 52590762 53668359 53982052 54538568 54705672 54893664 55465473 55656076 55826604 56152912 56402136 56731808 56905632 57695988 57894256 60103728 60938502 61355889 63172026 63389112 63606944 63823284 64042608 65131038 65938272 66389904 67311986 70121016 71094919 71312751 71557812 72047934 72940896 73700697 73953964 74180556 74435472 74945304 75202848 75986211 76927984 80973078 81251336 81807852 82340496 83484114 84229368 84518816 85097712 86543982 86841384 91407753 93494688 94468591 94758039 95083668 95410416 95734926 96063912 97398133 97696557 98267596 98907408 99584856 99927072 100281122 100967979 101314948 105181524 107336718 107964104 109077136 109411344 110930946 111312152 111653208 112305824 112804272 115391976 115788512 120207456 121459617 121877004 122711778 125226171 126344052 126778224 127646568 128085216 129419437 129815973 130262076 132779808 134623972 140242032 142189838 142625502 143115624 144095868 147401394 147907928 148361112 148870944 149890608 150421683 151972422 153855968 161946156 162502672 163615704 164680992 166396419 166968228 168458736 170195424 171968293 173087964 173682768 182815506 184067667 188937182 189516078 190167336 190820832 191469852 192127824 192808549 194796266 195393114 196535192 197814816 199169712 200562244 201935958 202629896 210363048 213284757 214673436 215928208 218154272 218822688 221102091 221861892 222624304 223306416 225608544 227958633 230783952 242919234 243754008 245423556 250452342 252688104 253556448 255293136 256197661 258838874 259631946 260524152 269247944 274223259 280484064 283405773 284379676 285251004 286231248 288191736 292194399 294802788 295815856 296722224 299781216 300843366 302903937 303944844 323892312 325005344 327231408 332792838 333936456 336917472 343936586 346175928 347365536 350983927 364378851 365631012 368135334 375678513 377874364 379032156 380334672 382939704 384255648 385617098 388258311 389592532 390786228 393070384 398339424 401124488 403871916 405259792 420726096 426569514 429346872 431856416 442204182 443723784 445248608 446612832 451265049 455917266 461567904 485838468 487508016 490847112 497664433 499189257 500904684 505376208 510586272 512395322 515904879 517677748 519263892 521048304 538495888 548446518 566811546 568759352 570502008 572462496 576383472 578425647 584388798 589605576 591631712 593444448 601686732 605807874 607889688 639854271 647784624 654462816 661280137 663306273 665585676 667872912 683875899 687873172 692351856 701967854 728757702 731262024 736270668 741418441 751357026 755748728 758064312 760669344 765879408 768592983 771234196 776516622 779185064 781572456 786140768 802248976 807743832 810519584 841452192 850217319 853139028 858693744 876583197 884408364 887447568 902530098 908711811 911834532 971676936 975016032 981694224 985172449 995328866 998378514 1001809368 1010752416 1024790644 1031809758 1035355496 1038527784 1042096608 1052951781 1076991776 1096893036 1133623092 1137518704 1141004016 1152766944 1156851294 1164774933 1168777596 1179211152 1203373464 1211615748 1215779376 1279708542 1295569248 1309064761 1322560274 1326612546 1331171352 1335745824 1349659843 1353795147 1367751798 1375746344 1384703712 1403935708 1457515404 1462524048 1472541336 1482836882 1492993299 1502714052 1511497456 1516128624 1531758816 1537185966 1542468392 1547714637 1553033244 1558370128 1563144912 1604497952 1615487664 1700434638 1706278056 1717387488 1735276941 1753166394 1768816728 1774895136 1793383627 1805060196 1817423622 1823669064 1919562813 1943353872 1963388448 1970344898 1983840411 1990657732 1996757028 2003618736 2049581288 2063619516 2070710992 2077055568 2105903562 2193786072 2224255323 2267246184 2275037408 2282008032 2305778949 2313702588 2329549866 2337555192 2358422304 2406746928 2423231496 2431558752 2456887489 2550651957 2559417084 2618129522 2629749591 2645120548 2653225092 2662342704 2699319686 2707590294 2735503596 2751492688 2807871416 2915030808 2925048096 2945082672 2955517347 2965673764 2985986598 3005428104 3022994912 3032257248 3074371932 3084936784 3095429274 3106066488 3116740256 3126289824 3158855343 3230975328 3400869276 3412556112 3470553882 3494324799 3506332788 3537633456 3586767254 3610120392 3634847244 3647338128 3839125626 3886707744 3927194283 3940689796 3967680822 3981315464 3993514056 4007237472 4048979529 4099162576 4127239032 4141421984 4154111136 4211807124 4387572144 4448510646 4478979897 4534492368 4611557898 4627405176 4643143911 4659099732 4675110384 4813493856 4846462992 4913774978 5101303914 5118834168 5189929087 5205830823 5236259044 5259499182 5290241096 5306450184 5324685408 5380150881 5398639372 5415180588 5471007192 5502985376 5615742832 5830061616 5890165344 5911034694 5931347528 5951521233 5971973196 6010856208 6148743864 6169873568 6190858548 6212132976 6317710686 6672765969 6801738552 6825112224 6896207143 6917336847 6941107764 6988649598 7012665576 7075266912 7173534508 7220240784 7269694488 7294676256 7370662467 7678251252 7854388566 7881379592 7935361644 7962630928 7987028112 8097959058 8198325152 8254478064 8423614248 8775144288 8866552041 8897021292 8957959794 9068984736 9163453327 9223115796 9254810352 9286287822 9318199464 9350220768 9447618901 9476566029 9692925984 9827549956 10202607828 10237668336 10379858174 10411661646 10472518088 10518998364 10580482192 10612900368 10760301762 10797278744 10830361176 10942014384 11231485664 11660123232 11781582849 11822069388 11862695056 11903042466 11943946392 12021712416 12146938587 12297487728 12381717096 12424265952 12553685389 12635421372 13345531938 13436939691 13603477104 13792414286 13834673694 13882215528 13977299196 14025331152 14347069016 14440481568 14539388976 14741324934 15356502504 15569787261 15708777132 15762759184 15870723288 15925261856 15974056224 16140452643 16195918116 16508956128 16847228496 17733104082 17794042584 17854563699 17915919588 18326906654 18446231592 18509620704 18572575644 18636398928 18702429253 18895237802 18953132058 19655099912 20018297907 20405215656 20475336672 20688621429 20759716348 20823323292 20945036176 21037996728 21160964384 21225800736 21520603524 21594557488 21660722352 21884028768 22111987401 23563165698 23644138776 23725390112 23806084932 23887892784 24293877174 24594975456 24763434192 25107370778 25270842744 26599656123 26691063876 26873879382 27206954208 27490359981 27584828572 27669347388 27764431056 27954598392 28050662304 28342856703 28694138032 29078777952 29482649868 30713005008 31139574522 31417554264 31525518368 31741446576 32280905286 32391836232 33694456992 35344748547 35466208164 35588085168 35709127398 35831839176 36329503609 36440815761 36653813308 36892463184 37145151288 37272797856 37404858506 37661056167 37790475604 37906264116 39310199824 40036595814 40810431312 41377242858 41519432696 41646646584 41890072352 42075993456 43041207048 43189114976 43321444704 44223974802 46709361783 47126331396 47288277552 47612169864 47775785568 48273450001 48421357929 48587754348 49526868384 50214741556 50541685488 53199312246 53382127752 53747758764 54980719962 55169657144 55338694776 55528862112 55909196784 56107287759 56685713406 57388276064 58965299736 61426010016 62065864287 62279149044 62835108528 63482893152 64144173289 64561810572 64783672464 66335962203 70689497094 70932416328 71176170336 71418254796 71663678352 71917588777 72659007218 72881631522 73307626616 73784926368 74290302576 74809717012 75322112334 75580951208 75812528232 78620399648 80073191628 81620862624 82471079943 82754485716 83038865392 83293293168 84151986912 85028570109 86082414096 88447949604 93418723566 94252662792 94576555104 95224339728 95561727553 96546900002 96842715858 97175508696 100429483112 101083370976 106398624492 106764255504 107495517528 108988510827 109961439924 110339314288 110677389552 111818393568 112214575518 112983168501 113371426812 117930599472 124131728574 124558298088 125670217056 128288346578 129123621144 129567344928 130917004771 132671924406 140128085349 141378994188 141864832656 142836509592 143327356704 143835177554 144820350003 145318014436 145763263044 146615253232 148580605152 149619434024 150644224668 151161902416 151625056464 160146383256 164942159886 165508971432 166077730784 166586586336 168321863277 170057140218 172164828192 176895899208 186197592861 186837447132 188505325584 190448679456 191123455106 192432519867 193093800004 193685431716 194351017392 200858966224 212797248984 213528511008 214991035056 215752766331 217977021654 219922879848 220678628576 221354779104 224429151036 225966337002 226742853624 235861198944 247413239829 248263457148 249116596176 255085710327 256576693156 258247242288 261834009542 265343848812 280256170698 282757988376 283729665312 285673019184 286685182659 287670355108 289640700006 290636028872 291526526088 293230506464 299238868048 301288449336 302323804832 303250112928 320292766512 326965532481 329884319772 331017942864 336643726554 338949505503 340114280436 353791798416 372395185722 373674894264 377010651168 382246910212 384865039734 386187600008 387370863432 388702034784 392751014313 401717932448 425594497968 429982070112 431505532662 434461050009 435954043308 439845759696 448858302072 451932674004 453485707248 494826479658 496526914296 498233192352 503423121439 504965589831 510171420654 513153386312 516494484576 523668019084 530687697624 560512341396 565515976752 571346038368 573370365318 575340710216 577297559601 579281400012 581272057744 583053052176 598477736096 602576898672 640585533024 647258298993 653931064962 659768639544 662035885728 668932092871 673287453108 677899011006 680228560872 707583596832 744790371444 747349788528 764493820424 769730079468 772375200016 774741726864 785502028626 851188995936 860055547977 863011065324 868922100018 871908086616 879691519392 897716604144 903865348008 906971414496 916419033397 980896597443 989652959316 993053828592 1006846242878 1009931179662 1020342841308 1026306772624 1047336038168 1061375395248 1121024682792 1131031953504 1146740730636 1150681420432 1154595119202 1158562800024 1162544115488 1166106104352 1178253042939 1205153797344 1294516597986 1303383150027 1307862129924 1319537279088 1337864185742 1346574906216 1355798022012 1360457121744 1489580742888 1494699577056 1510269364317 1528987640848 1539460158936 1544750400032 1549483453728 1571004057252 1720111095954 1726022130648 1731892678803 1737844200036 1743816173232 1795433208288 1807730696016 1832838066794 1941774896979 1961793194886 1979305918632 1986107657184 2006796278613 2013692485756 2019862359324 2040685682616 2052613545248 2094672076336 2122750790496 2242049365584 2293481461272 2301362840864 2309190238404 2317125600048 2356506085878 2580166643931 2589033195972 2606766300054 2615724259848 2639074558176 2675728371484 2693149812432 2711596044024 2720914243488 2749257100191 2979161485776 3020538728634 3057975281696 3078920317872 3142008114504 3440222191908 3452044261296 3463785357606 3475688400072 3487632346464 3523961850073 3534759128817 3615461392032 3665676133588 3883549793958 3923586389772 3958611837264 4013592557226 4027384971512 4039724718648 4081371365232 4189344152672 4484098731168 4530808092951 4586962922544 4618380476808 4634251200096 4682524650097 4713012171756 5160333287862 5178066391944 5213532600108 5231448519696 5351456742968 5386299624864 5423192088048 5498514200382 5958322971552 6020388835839 6041077457268 6157840635744 6284016229008 6880444383816 6904088522592 6927570715212 6951376800144 6976006111369 7047923700146 7069518257634 7331352267176 7767099587916 7847172779544 7917223674528 8027185114452 8054769943024 8079449437296 8162742730464 8247771300573 9061616185902 9173925845088 9236760953616 9365049300194 9426024343512 10320666575724 10356132783888 10427065200216 10462897039392 10571885550219 10702913485936 10846384176096 10997028400764 12040777671678 12082154914536 12568032458016 13592424278853 13760888767632 13855141430424 13902753600288 13952012222738 14047573950291 14095847400292 14139036515268 14662704534352 15534199175832 15694345559088 16054370228904 16109539886048 16158898874592 16495542601146 18061166507517 18123232371804 18473521907232 18730098600388 18852048687024 20641333151448 20712265567776 20854130400432 20928018334107 21143771100438 21405826971872 21994056801528 24081555343356 24164309829072 24743313901719 27184848557706 27521777535264 27710282860848 27904024445476 28095147900582 28191694800584 28278073030536 29325409068704 31068398351664 31388691118176 31715656650657 32108740457808 32991085202292 36122333015034 36246464743608 37460197200776 37704097374048 41282666302896 41708260800864 41856036668214 42142721850873 42287542200876 43988113603056 48163110686712 48328619658144 48832042779583 49486627803438 54369697115412 55420565721696 55808048890952 56190295801164 56383389601168 56556146061072 62136796703328 62784055002321 63431313301314 64217480915616 65982170404584 72244666030068 72492929487216 74920394401552 82565332605792 83712073336428 84285443701746 84575084401752 87976227206112 95146969951971 96326221373424 97664085559166 98973255606876 108739394230824 111616097781904 112380591602328 112766779202336 113112292122144 125568110004642 126428165552619 126862626602628 131964340809168 144489332060136 144985858974432 146496128338749 149840788803104 167424146672856 168570887403492 169150168803504 188352165006963 190293939903942 192652442746848 195328171118332 197946511213752 217478788461648 223232195563808 224761183204656 251136220009284 252856331105238 253725253205256 263928681618336 288978664120272 292992256677498 334848293345712 337141774806984 338300337607008 341824299457081 376704330013926 380587879807884 390656342236664 395893022427504 434957576923296 439488385016247 449522366409312 502272440018568 505712662210476 507450506410512 577957328240544 585984513354996 669696586691424 674283549613968 683648598914162 753408660027852 761175759615768 781312684473328 791786044855008 878976770032494 1004544880037136 1011425324420952 1014901012821024 1025472898371243 1171969026709992 1318465155048741 1348567099227936 1367297197828324 1506817320055704 1522351519231536 1562625368946656 1757953540064988 2009089760074272 2022850648841904 2050945796742486 2343938053419984 2636930310097482 2734594395656648 3013634640111408 3044703038463072 3076418695113729 3515907080129976 4045701297683808 4101891593484972 4687876106839968 5273860620194964 5469188791313296 6027269280222816 6152837390227458 7031814160259952 8203783186969944 9229256085341187 10547721240389928 10938377582626592 12305674780454916 14063628320519904 16407566373939888 18458512170682374 21095442480779856 24611349560909832 32815132747879776 36917024341364748 42190884961559712 49222699121819664 73834048682729496 98445398243639328 147668097365458992 295336194730917984
- Sum of all divisors σ(n): 1029289174382425320
- Sum of proper divisors (its aliquot sum) s(n): 733952979651507336
- 295336194730917984 is an abundant number, because the sum of its proper divisors (733952979651507336) is greater than itself. Its abundance is 438616784920589352
Bases of 295336194730917984
- Binary: 100000110010011111010110100010100000100000010000000011000002
- Hexadecimal: 0x4193EB450408060
- Base-36: 28RZXYU47KO0
Squares and roots of 295336194730917984
- 295336194730917984 squared (2953361947309179842) is 87223467918138707575666891334624256
- 295336194730917984 cubed (2953361947309179843) is 25760247106177390787691047872151479856972294593019904
-
The
square root of 295336194730917984 is 543448428.7684692385 -
The
cube root of 295336194730917984 is 665945.8113249323
Scales and comparisons
How big is 295336194730917984?- 295,336,194,730,917,984 seconds is equal to 9,390,777,457 years, 31 weeks, 5 days, 19 hours, 26 minutes, 24 seconds.
-
To count from 1 to 295,336,194,730,917,984 would take you about twenty-eight billion, one hundred seventy-two million, three hundred thirty-two thousand, three hundred seventy-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 295336194730917984 cubic inches would be around 55495.5 feet tall.
Recreational maths with 295336194730917984
- 295336194730917984 backwards is 489719037491633592
- The number of decimal digits it has is: 18
- The sum of 295336194730917984's digits is 90
- 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 295336194730917984 - Facts about the integer". Numbermatics.com. 2024. Web. 15 May 2024.
APA style:
Numbermatics. (2024). Number 295336194730917984 - Facts about the integer. Retrieved 15 May 2024, from https://numbermatics.com/n/295336194730917984/
Chicago style:
Numbermatics. 2024. "Number 295336194730917984 - Facts about the integer". https://numbermatics.com/n/295336194730917984/
The information we have on file for 295336194730917984 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 295336194730917984, math, Factors of 295336194730917984, curriculum, school, college, exams, university, Prime factorization of 295336194730917984, STEM, science, technology, engineering, physics, economics, calculator, two hundred ninety-five quadrillion, three hundred thirty-six trillion, one hundred ninety-four billion, seven hundred thirty million, nine hundred seventeen thousand, nine hundred eighty-four.