What is the factorial of 2001? (2001!) 2001 Factorial

What is the factorial of 2001?

Here we will show you how to calculate the factorial of 2001 (aka 2001 factorial) and give you the approximate scientific notation answer and the exact answer.

Before we begin, note that the factorial of 2001 can be written as 2001 followed by an exclamation mark like this: 2001!

Factorial of 2001 means that you multiply 2001 by every number below it. Therefore, you calculate the factorial of 2001 by multiplying 2001 by 2000, then by 1999, and so on all the way down to 1. In other words, we calculate 2001 × 2000 × 1999 × ... × 1 to get 2001 factorial.

The answer to 2001 factorial (2001!) contains 5739 digits and we have listed the exact entire answer at the bottom of this page. However, below is the approximate scientific notation answer to 2001 factorial:

6.6358664599 × 10⁵⁷³⁸

The answer above is also sometimes written as 6.6358664599e+5738. Regardless, it means that the approximate answer to 2001! is 66358664599 followed by 5728 more digits.

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Like we promised, below is the exact answer to 2001 factorial (2001!) with all 5739 digits:

66358664599937171155919621545332244006005155334196665695384428095578219388910724562294673495032491710306010823539289405262542771964800288605890465368621372150017375117088404515083962239631316636064348163485589315889154238589155466383980300084584861559333594482390010347886915535406347285030206957597373455624810917011652274497409740747128174455907503618254696937611843223885328811898999911305194297914159674248834152232837266456528966221839006661690648735274519631742361156457457245664608891140726916040154952683256894060015612869867503489144862807894513889461803373503671296533538568993596259418341769809678968325708597498563665207884864042556660571572587842334709092854023550550749719835664599568870448131383267710674984189906387853482835044877886022697617634191977983159125835649172221452629908489827151628759202997512911014760932666125434473888965421484067321675174072473011789477202701256151412968431594448885313741301980445569216287154640412428846903195399216630191388110085607412447487845419643631848715317811538647954894406720312126932728514668543196688709872602581135463174671058052674181258225683839560175998096550971719905347676709617635377879099593076855998187983455047987879309534012136505159807392148757126097349517666570730349637552439937741608249795289761327428061182268062088552912737276234938805679562286443308502211992191504747511021652380234504928157300468957449771781771674694062890029570744669948932646603425455788677788694496244712043287226839980267667787604185012170809306390576520500953517200620579419703613929102364794499753400650618849860856246862293755441286557024043864695556590870689423817262390824474147264185796241008982249571501400343104943015595124851601499590172497486699560150186533683815097903769224611022438760304129197379091973539424480691114677921910095152968958913881339996729556562562644080252746464424313322325050736146534360688421591168657968553769713772361397050114963705517582453994785298710777257753034555927262911074323003451842236938394450878066973780114204173832775327918788414172348112652501779512279466965856304497197474446423318912641488656386339556073599876808534116378518879041298144266374955865877815056554644981751191380305013036076348051440257888698301854744240227018532229118072970557427889228889159429751651107839089803066458355317730603616024716195910308168874145258509254411066603973607972813085115145654640381989900957915825452249024824081119685247543945632422087164251005927156878331089609695861533665264525497924934962260348322732949380066396745002239780709100015797921209020824947950929571600192685054581464071100396530617975657196803538465823311848769230562098214677431819547414934019391031694064667688834241415553448656000048790736065503914907796783150306722608587128401956738274730005517987940915816439652537756389195794499828680789144832831116523003063507726647529975458861093198389116938759405946037952987467945468804760635236233315505287379227139677890268155166844323296379295514403992758549634477700400189264557279710768363049444062241137545287898865263337850988453347515684872830901243528589781097950945632686872418765922877403743497074825018754962141708692418762052362024658396557302227184254573935626064149185172552085744536900524168726861423319382673459825242244365562333296941219249805190583708628927174099758332853086001100814083825379511512214578865662241469673871707864945962206644838665495731221891769342602276376883412030493213690793645179260032534647358636248493439145297118102685262777835747471377361452240276751842477154356184762051125733238965783311364358977514040669974770126133680707578208997440892694860965608793354266729318318690184521998380398270876080594351934377170719279459303938390977632343520204882917523899672825402766536879633507299797251512234616928950207636649880275896841390184406812460872601168786000471825545350392291114344153612470886768638563194525503413000259548235608595306207650385279929950629461499483079667307461556790935281186583173218931868295837540628060539586750967630225476529059635250075193227718473843412045647106394917424629996689519295425704971462072550021801811816150969775311575125089706701578364418626909168105785354385033912452857268604642462235357849827146999345251892509163050976251133756715238147769421566194855616350124847548128024311667978398950768481586395737801762415432205197494818280729990350343629517124449779253190639497271239319394616692266915429448050447832006724114698300549917178851827332026942356675386083114191541018867674444400785069857540091890196796776822701885616641544298817866163858920204146314268609872222507607403640614154956170791174518029356327221802878773991042846582620787650556589314511147891760437155995050486241383004583016895034310700969895563193452775539818002356867810082980339170806291911876150267287900817027242085461130535313231009559111582522248051244498844147296451128083927564486454824938427939537921609620427782483010568074117879989790350875667593899381684175095760313785544076436598984306978373224359947947511693669532438372971843205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What is the factorial of 2002?
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