Prime Number Generator
List every prime number up to a limit.
25primes found
2357111317192329313741434753596167717379838997
Free online prime number generator. Enter a limit to list every prime number up to it using the Sieve of Eratosthenes, with a total count. Fast and runs in your browser.
How to use the Prime Number Generator
- 01Enter the upper limit.
- 02Every prime up to that number is generated instantly.
- 03Copy the full list with one click.
Frequently asked questions
How does the generator work?
It uses the Sieve of Eratosthenes, a classic algorithm that efficiently marks off multiples to leave only the prime numbers.
Is there a maximum limit?
To keep it fast and responsive in the browser, the limit is capped at one million. Larger sets are offered as copyable text rather than tiles.