Prime Number Checker

Check if numbers are prime, find prime factors, and generate primes in a range.

Math v1.0.0 51 uses

Check a Number

Find Primes in Range

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About This Tool

This Prime Number Checker lets you test whether any number is prime, find its prime factorization, and generate all prime numbers within a specified range. It is a handy tool for math students, number theory enthusiasts, and programmers working on problems involving primes. Get instant primality results along with detailed factor breakdowns for any number you enter.

How to Use

1 Enter a number to check if it is prime or find its prime factors
2 Optionally specify a range to generate all prime numbers within it
3 Click check or generate to compute the results
4 View the primality result, prime factorization, or list of primes in the range