🔢Modular Arithmetic Calculator
Modular arithmetic wraps numbers around after reaching a modulus. a mod m is the remainder when a is divided by m. Foundational in cryptography, checksums, and number theory.
- 1a mod m = remainder of a ÷ m
- 2(a+b) mod m = ((a mod m)+(b mod m)) mod m
- 3Modular exponentiation: fast algorithm for aⁿ mod m
17 mod 5=217 = 3×5 + 2
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Fun Fact
RSA encryption (securing all HTTPS traffic) relies on modular exponentiation. Reversing the operation (discrete logarithm) is computationally infeasible for large numbers.
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