Education & Math Tools
Prime Number Checker
Enter a number to check whether it's prime, and see its full prime factorization if not.
97 is a prime number
How to use this tool
- 1Enter a number.
- 2See whether it's prime, and its factorization if not.
Frequently asked questions
What is a prime number?+
A whole number greater than 1 with exactly two factors: 1 and itself.