Prime Number Checker
Check if a number is prime, find its factors, and list primes up to any limit.
First 50 Prime Numbers
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, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229
Prime Number Facts
- 2 is the only even prime number
- Twin primes differ by 2: (3,5), (11,13), (17,19)…
- There are infinitely many primes (Euclid's theorem)
- The largest known prime (2024) has over 40 million digits