What is the factorial of 427? (427!) 427 Factorial

What is the factorial of 427?

Here we will show you how to calculate the factorial of 427 (aka 427 factorial) and give you the approximate scientific notation answer and the exact answer.

Before we begin, note that the factorial of 427 can be written as 427 followed by an exclamation mark like this: 427!

Factorial of 427 means that you multiply 427 by every number below it. Therefore, you calculate the factorial of 427 by multiplying 427 by 426, then by 425, and so on all the way down to 1. In other words, we calculate 427 × 426 × 425 × ... × 1 to get 427 factorial.

The answer to 427 factorial (427!) contains 940 digits and we have listed the exact entire answer at the bottom of this page. However, below is the approximate scientific notation answer to 427 factorial:

2.9063471769 × 10⁹³⁹

The answer above is also sometimes written as 2.9063471769e+939. Regardless, it means that the approximate answer to 427! is 29063471769 followed by 929 more digits.

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Like we promised, below is the exact answer to 427 factorial (427!) with all 940 digits:

2906347176960734841102915400715931684676738386917551293602548940017089151563020096075793145507544909799419325859795323626093294797601295362066222447438952667031315410724883975028255045041250967003021649815634917672723512152046317329813204370731220675839985347995496026203846545595056245788546987335750260208358284546291147473293252515791139722473131884086360496749320657551127839785289082610236625397838417994044140052064528157551457620578232391435991791325758463549417841949376589453031999388696831078873411074599909633778369511252614215116845902011637486786496344033030211520607498474074348716583103427724802387789604245206457732417620741922128269046960386975413294794633781512968490642838333805952796503387711844405306514987765843460355064766744241388139564882514479660485760706796398091343123973467734371818224366218814091320885248000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

What is the factorial of 428?
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