What is the factorial of 423? (423!) 423 Factorial

What is the factorial of 423?

Here we will show you how to calculate the factorial of 423 (aka 423 factorial) and give you the approximate scientific notation answer and the exact answer.

Before we begin, note that the factorial of 423 can be written as 423 followed by an exclamation mark like this: 423!

Factorial of 423 means that you multiply 423 by every number below it. Therefore, you calculate the factorial of 423 by multiplying 423 by 422, then by 421, and so on all the way down to 1. In other words, we calculate 423 × 422 × 421 × ... × 1 to get 423 factorial.

The answer to 423 factorial (423!) contains 929 digits and we have listed the exact entire answer at the bottom of this page. However, below is the approximate scientific notation answer to 423 factorial:

8.8665615014 × 10⁹²⁸

The answer above is also sometimes written as 8.8665615014e+928. Regardless, it means that the approximate answer to 423! is 88665615014 followed by 918 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 423 factorial (423!) with all 929 digits:

88665615014319916975910258001125988498226075426545410927460438352203709193261742787279072673199636121448380178141174809331395015947632184245439231320766452240834593226922288173960920262855828560240272375311740705958411756177376398814068046700513869527457051034075001436109074697545615443738862745798196083469951900479102835607839662923445945545641890622690324511350675865236354225047924129819113653245761023631162472980948595497325993056714052118854200734502856722017843063590588412391587792333131601325150708799045543366223111832955430316561093421748368548856634650702752797682472828457872918038763424470233834482230569335924138574208932748438627283156993640164809224781370229618966403078695903944887293576043326070128872767416219674516689627486242314184213279974433662511502751545523027216235678582320825598845291999652741120000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

What is the factorial of 424?
The factorial of 423 is not the only problem we can solve. Go here for the next number on our list that we have calculated the factorial of!