Introduction - If you have any usage issues, please Google them yourself
Seeking N! Digits. I.e. log10 (! N) various formulas, there is a: (! N) Log10 log10 (n* (n-1)* (n-2)* ...) log10 (n)+log10 (n-1 ) ... a loop on the line Note: the last number (s set) if more than the number must be rounded in s plus 1