$$$100!$$$

求$$$100!$$$

正整數 $$$n$$$ 的階乘是小於或等於 $$$n$$$ 的所有正整數的乘積: $$$n! = 1 \cdot 2 \cdot \ldots \cdot (n-1) \cdot n$$$.

因此，$$$100! = 1 \cdot 2 \cdot \ldots \cdot 99 \cdot 100 = 93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253697920827223758251185210916864000000000000000000000000$$$。

$$$100!\approx 9.33262154439442 \cdot 10^{157}$$$A