Prime Checker
Check primality, factorize numbers, list primes, and compute GCD/LCM.
Prime & Number Theory
Check primality, factorize, list primes, or compute GCD/LCM
Result
Updates live
Primes in range
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97
About the Prime Checker
Test whether a number is prime, break it down into its prime factors, list all primes within a range, and compute the greatest common divisor and least common multiple of two numbers.
Examples
Factorize 60
60Output
2 × 2 × 3 × 5Related tools
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Frequently asked questions
Version 1.0.0 · Updated 2026-08-06 · Runs entirely in your browser