What is the factorial of 1998? (1998!) 1998 Factorial

What is the factorial of 1998?

Here we will show you how to calculate the factorial of 1998 (aka 1998 factorial) and give you the approximate scientific notation answer and the exact answer.

Before we begin, note that the factorial of 1998 can be written as 1998 followed by an exclamation mark like this: 1998!

Factorial of 1998 means that you multiply 1998 by every number below it. Therefore, you calculate the factorial of 1998 by multiplying 1998 by 1997, then by 1996, and so on all the way down to 1. In other words, we calculate 1998 × 1997 × 1996 × ... × 1 to get 1998 factorial.

The answer to 1998 factorial (1998!) contains 5729 digits and we have listed the exact entire answer at the bottom of this page. However, below is the approximate scientific notation answer to 1998 factorial:

8.2948351487 × 10⁵⁷²⁸

The answer above is also sometimes written as 8.2948351487e+5728. Regardless, it means that the approximate answer to 1998! is 82948351487 followed by 5718 more digits.

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Like we promised, below is the exact answer to 1998 factorial (1998!) with all 5729 digits:

82948351487009335697233451240028115014535197801545282505551161507263151051926168684410512971418857492596886678645781418023532970839243070568130723743457651051934481879980975639098862574254789358777774898800711345039279058056208847032187133152514365077758262542553148573145787705704860532502891822719672499449138508549192480419882280904480444189995427021675126590796451728969593257272064207147544659278864412527145822077502102446186819324003589328010642921753879978147945982558317196660060278940978380294788764551262255390583363733175312655259242324678723531508137093913862599132572994385243920583907358238938270141703282299025156266145146589482473085084006073919904846043740949123674430713188427758194999712979012883096951011620737722037974315590936426106128569272114796977606538963100017590791783310229767093390777094585412414804269533724176523405337628189491199466767457283129057628767783762135206744341179146401428776984669803128971141186085812057511643372159863827705192063905025241815670260692119712840822357470012677446787370097232682974081386856025709867314807581928314811047041584326238808132484137920484700118795718413579485079467156888833444557235630654977661479394688658657013801170965463372815602444086557429261044212344266499003671691467845043971573237005510910662804143536113494719514601473944041993109951135541919513244868550598072038295075049061893425669982003692313137805499044742339798121912961315676494727377963664226763292558943445625915515512428853441798094954755003902262608553872789094389170098068248791691715334306789569822084206334325145907356785417063548567495338153889369341788074035380288616650142693128357362321585881657698226388933347662218094324017487068873641706126048389886547659370081947289359202051331276610867603097062270989432714282459171478686217073941887426683055313115503274787764400144405136417217184834687861578278814752871639078436758570012103195237941024937002546894341355482316938072716141567506964068034211917631618250808317016882050393505661973999210724945436453650082572419128622497590765213318527719981263702636306280573413201382448986414107424009780447537111730288600217623203004602373830926426426438953878559162946017925493706754692983768681006470573978516371947523287164594956435136699997371784204482162569827832020842804072954851311656975077498289405467596254784274788750270324135594867153683798386965953135420352155565526267578961676555730419962706390283157000721290707931632296665483112468691979185114623195737379591217303973028818692608089338747417682785673496144260411084850172723819212139741696899924465837434686188760422685768943911807473956291571352032648969700445047879608759676624187823571194682416251438673902470245059372084843082199190631677551554133867471350271098301685077867192310210584450131038677530218948226932543227878931755583925327022370651246416640988818556617108477853485961357886512920885662768856926549163473296819118250071206899410948886661819028289951031043161881264589709152418236291602170026042743091382372484053574825198784101117956889362803919873293703890110367133682822047259922552207010490434663467256390271501164629970528836163482484573298279190093250088765053014258950192521528448599531682463107097242464417796775574849104620852934362461932440264662871622670822288882096282780558924775517352846962909656793771699818942559517364268731335406415929405819443794495779806397709905475808238616087018733432936203705155191326914348842079266993891789141256483609431519156811410600481006698723969365331563034706059022454558710082622751608251809229501014604392856546936029284844789673855085564655863925212782419064180973056234956892150870936080464672614143651374507944369926010452966012340827215129792504488555522394984245650936003765754399609699444308985823810846245982722683440216672404512972179980775503709452018114465511116967561173578283758463869807983040604220949259230471686884172045478305880320602839713691528335320370656967018091338657161610279071671251146779310359662959712665713242102793964408028883852882287764634535150168435634413173660352298081721301217821166354410870733932011073690295674838688898384443735579840257093441246315834862595175781025638237701949991559083645573989187694609207586051078077635155862602685964588687041219445016638211903122496218280114005188531686717894678162130142515530301134778302984832243076583620058392952527775028349319311396316148450626161805783722311264222102865588776187202451943985861683861894530257797598127345376068947909976403767685534976884725558503314740691431168828820584562166942472109140359989913647733594826234468898895359233094359041283455534352851735749629346434590207115040582318373855578027090243415699788789647743856929777340246063817244725429974245869773836897451040332184855549159972052596738573148151151927633169742402311621861958072315931248124350793036587737299744388991720803114321342490440532065741084966444276535491535884909505955480252080155667388904085164615875646343138691003542451277844749556733137913668201383580795830133347150423703153892003277007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