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Factorals (shown as n! on many calculators) are calculated by multiplying an integer by every smaller positive integer.
1! = 1.0x10⁰
2! = 2.0x10⁰
3! = 6.0x10⁰
4! = 2.4x10¹
5! = 1.20x10²
6! = 7.20x10²
7! = 5.040x10³
8! = 4.0320x10⁴
9! = 3.6288x10⁵
10! = 3.6288x10⁶
11! = 3.9916x10⁷
12! = 4.7900x10⁸
13! = 6.2270x10⁹
14! = 8.7178x10¹⁰
15! = 1.3076x10¹²
16! = 2.0922x10¹³
17! = 3.5568x10¹⁴
18! = 6.4023x10¹⁵
19! = 1.2164x10¹⁷
20! = 2.4329x10¹⁸
21! = 5.1090x10¹⁹
22! = 1.1240x10²¹
23! = 2.5852x10²²
24! = 6.2044x10²³
25! = 1.5511x10²⁵
26! = 4.0329x10²⁶
27! = 1.0888x10²⁸
28! = 3.0488x10²⁹
29! = 8.8417x10³⁰
30! = 2.6525x10³²
31! = 8.2228x10³³
32! = 2.6313x10³⁵
33! = 8.6833x10³⁶
34! = 2.9523x10³⁸
35! = 1.0333x10⁴⁰
36! = 3.7199x10⁴¹
37! = 1.3763x10⁴³
38! = 5.2302x10⁴⁴
39! = 2.0397x10⁴⁶
40! = 8.1591x10⁴⁷
41! = 3.3452x10⁴⁹
42! = 1.4050x10⁵¹
43! = 6.0415x10⁵²
44! = 2.6582x10⁵⁴
45! = 1.1962x10⁵⁶
46! = 5.5026x10⁵⁷
47! = 2.5862x10⁵⁹
48! = 1.2413x10⁶¹
49! = 6.0828x10⁶²
50! = 3.0414x10⁶⁴