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Number Theory

GCD Calculator

Find the greatest common divisor — the largest integer that divides two whole numbers exactly with no remainder. Use it to simplify fractions, reduce ratios, and solve number-theory problems.

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Math

Prime Factorization Calculator

Decompose any positive integer into its unique product of prime numbers — the fundamental "atomic" representation that underlies divisibility, fractions, modular arithmetic, and cryptography. The result is returned as a space-separated multiplication expression.

Fill in the required fields to see your result.

Key differences

GCD CalculatorPrime Factorization Calculator
CategoryNumber TheoryMath
Inputs required21
ResultGreatest Common DivisorPrime Factors
What it doesFind the greatest common divisor — the largest integer that divides two whole numbers exactly with no remainder. Use it to simplify fractions, reduce ratios, and solve number-theory problems.Decompose any positive integer into its unique product of prime numbers — the fundamental "atomic" representation that underlies divisibility, fractions, modular arithmetic, and cryptography. The result is returned as a space-separated multiplication expression.