Power Mod Calculator (a^b) mod m. a b m a^b mod m 4 Step-by-step with your numbers: 1. Values used: 2. a = 7 3. b = 10 4. m = 13 5. a^b mod m = 4 Did we solve your problem today? 👍 Yes 👎 No Thanks for the feedback! Modular exponentiation. FAQ Use? RSA, cryptography. Related calculators Modulo Calculator Find the remainder and quotient of a division. Exponent Calculator Raise a base to a power. Inverse Modulo Calculator Find x where a·x ≡ 1 (mod m).