Prime Number Generator

A prime number generator lists all prime numbers up to a specified limit using the Sieve of Eratosthenes — an ancient algorithm that is still one of the most efficient methods. Use this calculator for accurate, instant results.

The calculator uses the standard published formula for prime generator. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

The calculator applies the standard formula for this type of calculation. See the 'How It Works' steps above for the detailed formula breakdown.