[질문] 수학루카스의정리가뭔가요

If p=prime, N=a_j a_(j-1)..a_2 a_1 (p) k=b_j b_(j-1)..b_2 b_1 (p) (N Choosen k)≡(a_j Choosen b_j)(a_(j-1) Choosen b_(j-1)) ... (a_1 Choosen b_1)