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.
| n | n! (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 |