Factorials from 0! to 100!
n! is the product of every whole number from 1 to n, and 0! is 1. Factorials grow fast: 10! is already 3,628,800 and 100! has 158 digits. Each row links to a page with the exact value, its prime factors and how it is used.
| n | n! | Digits | Trailing zeros |
|---|---|---|---|
| 0! | 1 | 1 | 0 |
| 1! | 1 | 1 | 0 |
| 2! | 2 | 1 | 0 |
| 3! | 6 | 1 | 0 |
| 4! | 24 | 2 | 0 |
| 5! | 120 | 3 | 1 |
| 6! | 720 | 3 | 1 |
| 7! | 5,040 | 4 | 1 |
| 8! | 40,320 | 5 | 1 |
| 9! | 362,880 | 6 | 1 |
| 10! | 3,628,800 | 7 | 2 |
| 11! | 39,916,800 | 8 | 2 |
| 12! | 479,001,600 | 9 | 2 |
| 13! | 6,227,020,800 | 10 | 2 |
| 14! | 87,178,291,200 | 11 | 2 |
| 15! | 1,307,674,368,000 | 13 | 3 |
| 16! | 20,922,789,888,000 | 14 | 3 |
| 17! | 355,687,428,096,000 | 15 | 3 |
| 18! | 6,402,373,705,728,000 | 16 | 3 |
| 19! | 121,645,100,408,832,000 | 18 | 3 |
| 20! | 2,432,902,008,176,640,000 | 19 | 4 |
| 21! | 51,090,942,171,709,440,000 | 20 | 4 |
| 22! | 1.124000 × 10^21 | 22 | 4 |
| 23! | 2.585201 × 10^22 | 23 | 4 |
| 24! | 6.204484 × 10^23 | 24 | 4 |
| 25! | 1.551121 × 10^25 | 26 | 6 |
| 26! | 4.032914 × 10^26 | 27 | 6 |
| 27! | 1.088886 × 10^28 | 29 | 6 |
| 28! | 3.048883 × 10^29 | 30 | 6 |
| 29! | 8.841761 × 10^30 | 31 | 6 |
| 30! | 2.652528 × 10^32 | 33 | 7 |
| 31! | 8.222838 × 10^33 | 34 | 7 |
| 32! | 2.631308 × 10^35 | 36 | 7 |
| 33! | 8.683317 × 10^36 | 37 | 7 |
| 34! | 2.952327 × 10^38 | 39 | 7 |
| 35! | 1.033314 × 10^40 | 41 | 8 |
| 36! | 3.719933 × 10^41 | 42 | 8 |
| 37! | 1.376375 × 10^43 | 44 | 8 |
| 38! | 5.230226 × 10^44 | 45 | 8 |
| 39! | 2.039788 × 10^46 | 47 | 8 |
| 40! | 8.159152 × 10^47 | 48 | 9 |
| 41! | 3.345252 × 10^49 | 50 | 9 |
| 42! | 1.405006 × 10^51 | 52 | 9 |
| 43! | 6.041526 × 10^52 | 53 | 9 |
| 44! | 2.658271 × 10^54 | 55 | 9 |
| 45! | 1.196222 × 10^56 | 57 | 10 |
| 46! | 5.502622 × 10^57 | 58 | 10 |
| 47! | 2.586232 × 10^59 | 60 | 10 |
| 48! | 1.241391 × 10^61 | 62 | 10 |
| 49! | 6.082818 × 10^62 | 63 | 10 |
| 50! | 3.041409 × 10^64 | 65 | 12 |
| 51! | 1.551118 × 10^66 | 67 | 12 |
| 52! | 8.065817 × 10^67 | 68 | 12 |
| 53! | 4.274883 × 10^69 | 70 | 12 |
| 54! | 2.308436 × 10^71 | 72 | 12 |
| 55! | 1.269640 × 10^73 | 74 | 13 |
| 56! | 7.109985 × 10^74 | 75 | 13 |
| 57! | 4.052691 × 10^76 | 77 | 13 |
| 58! | 2.350561 × 10^78 | 79 | 13 |
| 59! | 1.386831 × 10^80 | 81 | 13 |
| 60! | 8.320987 × 10^81 | 82 | 14 |
| 61! | 5.075802 × 10^83 | 84 | 14 |
| 62! | 3.146997 × 10^85 | 86 | 14 |
| 63! | 1.982608 × 10^87 | 88 | 14 |
| 64! | 1.268869 × 10^89 | 90 | 14 |
| 65! | 8.247650 × 10^90 | 91 | 15 |
| 66! | 5.443449 × 10^92 | 93 | 15 |
| 67! | 3.647111 × 10^94 | 95 | 15 |
| 68! | 2.480035 × 10^96 | 97 | 15 |
| 69! | 1.711224 × 10^98 | 99 | 15 |
| 70! | 1.197857 × 10^100 | 101 | 16 |
| 71! | 8.504785 × 10^101 | 102 | 16 |
| 72! | 6.123445 × 10^103 | 104 | 16 |
| 73! | 4.470115 × 10^105 | 106 | 16 |
| 74! | 3.307885 × 10^107 | 108 | 16 |
| 75! | 2.480914 × 10^109 | 110 | 18 |
| 76! | 1.885494 × 10^111 | 112 | 18 |
| 77! | 1.451830 × 10^113 | 114 | 18 |
| 78! | 1.132428 × 10^115 | 116 | 18 |
| 79! | 8.946182 × 10^116 | 117 | 18 |
| 80! | 7.156945 × 10^118 | 119 | 19 |
| 81! | 5.797126 × 10^120 | 121 | 19 |
| 82! | 4.753643 × 10^122 | 123 | 19 |
| 83! | 3.945523 × 10^124 | 125 | 19 |
| 84! | 3.314240 × 10^126 | 127 | 19 |
| 85! | 2.817104 × 10^128 | 129 | 20 |
| 86! | 2.422709 × 10^130 | 131 | 20 |
| 87! | 2.107757 × 10^132 | 133 | 20 |
| 88! | 1.854826 × 10^134 | 135 | 20 |
| 89! | 1.650795 × 10^136 | 137 | 20 |
| 90! | 1.485715 × 10^138 | 139 | 21 |
| 91! | 1.352001 × 10^140 | 141 | 21 |
| 92! | 1.243841 × 10^142 | 143 | 21 |
| 93! | 1.156772 × 10^144 | 145 | 21 |
| 94! | 1.087366 × 10^146 | 147 | 21 |
| 95! | 1.032997 × 10^148 | 149 | 22 |
| 96! | 9.916779 × 10^149 | 150 | 22 |
| 97! | 9.619275 × 10^151 | 152 | 22 |
| 98! | 9.426890 × 10^153 | 154 | 22 |
| 99! | 9.332621 × 10^155 | 156 | 22 |
| 100! | 9.332621 × 10^157 | 158 | 24 |