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Factorial Table (0! to 20!)

This factorial table lists n! (n factorial) from 0 to 20. A factorial multiplies all whole numbers from 1 up to n — for example 5! = 5 × 4 × 3 × 2 × 1 = 120. By definition 0! = 1.

nn! (factorial)
0!1
1!1
2!2
3!6
4!24
5!120
6!720
7!5,040
8!40,320
9!362,880
10!3,628,800
11!39,916,800
12!479,001,600
13!6,227,020,800
14!87,178,291,200
15!1,307,674,368,000
16!20,922,789,888,000
17!355,687,428,096,000
18!6,402,373,705,728,000
19!121,645,100,408,832,000
20!2,432,902,008,176,640,000

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