Prime Number Generator (List Primes)
Math ToolsList all primes between two numbers
Embed this tool on your websiteFree
- Choose how tall the frame should be.
- Press Copy code.
- Paste it into your page, blog, WordPress or Notion HTML block.
The tool runs inside your visitor's browser, nothing is uploaded, and a small "Powered by ToolCloak" line stays under it. The second line (script) is optional: it makes the frame fit the tool's height.
Similar tools you may like
History
All history →Prime Number Generator (List Primes) — at a glance
Get a list of prime numbers in any range.
How to use it — step by step
The first and last number of the range.
Choose the options
Pick the mode and settings you need. Results update when you run the tool again.
Press List Primes
The result is made instantly inside your browser.
Copy the result
Use the Copy button, or send it to another tool.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
What is a prime number?+
A whole number above 1 with exactly two divisors, 1 and itself.
What is the biggest range?+
The upper limit is 1,000,000.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.