What is the factorial of 990? (990!) 990 Factorial

What is the factorial of 990?

Here we will show you how to calculate the factorial of 990 (aka 990 factorial) and give you the approximate scientific notation answer and the exact answer.

Before we begin, note that the factorial of 990 can be written as 990 followed by an exclamation mark like this: 990!

Factorial of 990 means that you multiply 990 by every number below it. Therefore, you calculate the factorial of 990 by multiplying 990 by 989, then by 988, and so on all the way down to 1. In other words, we calculate 990 × 989 × 988 × ... × 1 to get 990 factorial.

The answer to 990 factorial (990!) contains 2538 digits and we have listed the exact entire answer at the bottom of this page. However, below is the approximate scientific notation answer to 990 factorial:

4.2096855399 × 10²⁵³⁷

The answer above is also sometimes written as 4.2096855399e+2537. Regardless, it means that the approximate answer to 990! is 42096855399 followed by 2527 more digits.

Factorial Calculator
Do you need to get the factorial for another number? Calculate the factorial of another number right here!

Like we promised, below is the exact answer to 990 factorial (990!) with all 2538 digits:

420968553994851716755941042336061773138320417349747921744064330687849165290658850058183317539527295977244346884077515263571000940056443561946724485943422740497560544110790490107737597696514192626989313274402950735145629649995037631443067122394899999473743675601307052514135495583777342036266502554931810464462535302234781162356697954018211644335510147382538325885822081947113869936878333204706631118889095325118221225776142676572666796561588678484861916879170404815427754543771943860669211386012371911524308983166391503370286778831566895852621781774522032822836488190235307097044436365939557250198604564997403978748797568770986228781783940317292447078843972286987300295269667694986875267217463492445523497215698339307178310922640052867859837039542970208828302088872152359286780153152896627082936566922392609273304631238866872020621167990138402391150661739848045302917868173612803553319189291840337937929206441296014822149179234240643493626462514638582196095921282033804847539048748746613594242878212070639588086027217842260389389532501326677372350065147978282230054364116328102258593483997442928070465249037393659111916419930070813189028446375014634780494728037972888449912323875219038605023159809790504115129047512641962699059257729278548806552739884279560802178179856548962275603878832743127976737197146761013269276343583938043224013182822627517991450767740943381085905198065287394552026151563316282249548875879093433082680366013593905822998490950039693146331749545121105548385669372940283973731007988800094345606904914784082288508559009494252685126250437303525233168376479925327975340112038721091048991036220807678885259949104526782444958057854405796942162823036098892575822327210496280654148523636843904946453083797395622678031935271256616179969657812171046940805849062759597687149092457271689064385695507390497184279146292009985792522820095020092066966434592963937819702054254759611038921707413076423024803141677813236474221641776839591403263365382345862886004650896998449830178906681094638351550927194869199241793266675799136541142947589924667771121400085282203049029921603439809556592806655731273837487358536015933685246426556113586080548528117598910491614882685353331028502089003771942028384846608291251161306660319532797657599686056732476206878294174606679027178094258553193743620505600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

What is the factorial of 991?
The factorial of 990 is not the only problem we can solve. Go here for the next number on our list that we have calculated the factorial of!