Question Number 142858 by mohssinee last updated on 06/Jun/21
Commented by mohssinee last updated on 06/Jun/21
$${help}\:{please}\:?? \\ $$
Commented by Dwaipayan Shikari last updated on 06/Jun/21
$$\left({p}−\mathrm{1}\right)!\equiv−\mathrm{1}{mod}\left({p}\right) \\ $$
Answered by mindispower last updated on 06/Jun/21
$${wilson}\:{Theorem} \\ $$