What is 491 factorial?

491! = 67162430982977085714.... It has 1110 digits and 120 trailing zeros.

Calculate the factorial of 491 - Factorial Calculator

Quick Answer: 491! = 6716243098...0000
1,110 digits | 120 trailing zeros

Factorial Calculator Until 10,000

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491! Result

67162430982977085714...00000000

How 491! is calculated

The number of trailing zeros in 491! is 120.
The number of digits in 491 factorial is 1110.
In scientific notation: 491! ≈ 6.716243 × 10¹¹⁰⁹
The factorial of 491 is calculated, through its definition, this way:
491! = 491 • 490 • 489 • 488 • 487 ... 3 • 2 • 1

Exact value of 491!

491! = 671624309829770857145538943290278777587873887463121298952417474629282796761198568705901052290179311812349054552437955668425342485505600026400052437071214248683381868193503165772920122522762127063680888031279648873190822287471869775155393525075749505435882042680380526921391270819236221093302894673979121122643611712152582964298727058718345845784355976897571657812685162776491101947455562126039830325270348496948552308546025499021005970524757106465135151782824226517231625868788336472137618823910401362676786965981412113972377266834914718318166221457209531117322456497891208766110717519614656567940762431982495500890097859572356163314251744355921755717704731162724497844570213735005362907547631832114762516900216421770297365514223596238378286378497255803205844287730299690098837370682912839947926990212510381715896095382700607244930090990821180833311954566865237557783002480667893963288362819595982747224607730038169913477207004817156150333311373119823012855424168721485594683924184725192704000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Nearby Factorials

n	n!	Digits	Trailing Zeros
486!	24021006...0000	1,097	119
487!	11698229...0000	1,100	119
488!	57087362...0000	1,102	119
489!	27915720...0000	1,105	119
490!	13678702...0000	1,108	120
491!	67162430...0000	1,110	120
492!	33043916...0000	1,113	120
493!	16290650...0000	1,116	120
494!	80475814...0000	1,118	120
495!	39835527...0000	1,121	121
496!	19758421...0000	1,124	121

More factorial calculations

Here you can find answers to questions like: Calculate the factorial of 491 What is the factorial of 491? What is the last digits of factorial of 491? How many trailing zeros in 491 factorial? How many digits are there in 491 factorial? Use the factorial calculator above to find the factorial of any natural between 0 and 10,000.

What is factorial?

Definition of factorial

The factorial is a quantity defined for any integer n greater than or equal to 0.

The factorial is the product of all integers less than or equal to n but greater than or equal to 1. The factorial value of 0 is, by definition, equal to 1. For negative integers, factorials are not defined. The factorial can be seen as the result of multiplying a sequence of descending natural numbers (such as 3 × 2 × 1).

The factorial symbol is the exclamation mark (!).

The factorial formula

If n is a natural number greater than or equal to 1, then

n! = n x (n - 1) x (n - 2) x (n - 3) ... 3 x 2 x 1

If n = 0, then n! = 1, by convention.

Example: 6! = 6 x 5 x 4 x 3 x 2 x 1 = 720

Shortcut to find trailing zeros in a factorial

Trailing zeros are a sequence of zeros in the decimal representation of a number, after which no other digits follow. This video shows how to find the trailing zeros of a factorial easily.

Table of factorials until 30

n	n!
1!	1	#
2!	2	#
3!	6	#
4!	24	#
5!	120	#
6!	720	#
7!	5040	#
8!	40320	#
9!	362880	#
10!	3628800	#
11!	39916800	#
12!	479001600	#
13!	6227020800	#
14!	87178291200	#
15!	1307674368000	#
16!	20922789888000	#
17!	355687428096000	#
18!	6402373705728000	#
19!	121645100408832000	#
20!	2432902008176640000	#
21!	51090942171709440000	#
22!	1124000727777607680000	#
23!	25852016738884976640000	#
24!	620448401733239439360000	#
25!	15511210043330985984000000	#
26!	403291461126605635584000000	#
27!	10888869450418352160768000000	#
28!	304888344611713860501504000000	#
29!	8841761993739701954543616000000	#
30!	265252859812191058636308480000000	#

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