Number TheorySuperchallengeFermat, Euler and Wilson ShareFermat, Euler and Wilson · Superchallenge problemHow many integers aaa with 1≤a≤1001 \le a \le 1001≤a≤100 satisfy a20≡1(mod100)a^{20} \equiv 1 \pmod{100}a20≡1(mod100)?Check Show answer Walk through it step by step Practice more like this Review this concept