Prime Number Generator - Free, Instant, In Your Browser
Enter an upper limit (up to 1,000,000) to generate every prime number up to and including it.
How to use Prime Number Generator
- 1Paste your text or data into the input box above.
- 2Prime Number Generator runs instantly, right in your browser.
- 3Copy the result or use it directly.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
What's the formula?
Generated using the Sieve of Eratosthenes, a classic and efficient algorithm for finding all primes up to a limit.
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.