Calculate Prime Numbers

Calculate Prime Numbers lets you instantly generate a list of prime numbers, starting from 2 and continuing until you hit the count you specify. Whether you’re looking for the first 5 or the first 10,000 primes, the tool handles it quickly and gives you clean, line-by-line output.

You don’t need to write a script, load a library, or open another tab. Just type how many you want, and it generates them in real time. You can then copy the list or export it as a text file. It’s a quick way to get prime numbers for testing, teaching, or solving math problems on the fly.

Paste your input above or import a file below.
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Supported file types: .txt, .csv, .json, .log
Total items: 0

How to Use:

  1. Type how many prime numbers you want from 1 to 10,000.
  2. Click “Generate” or just start typing; the output updates automatically.
  3. View the full list in the output box.
  4. Use “Copy Output” to send the list to your clipboard.
  5. Use “Export to File” to save the primes as a .txt file.
  6. Click “Clear All” to reset and enter a new number.

Example:

Input:

6

Output:

2  
3  
5  
7  
11  
13

You can change the input and regenerate the list anytime it’s always instant.

Common Use Cases:

Calculate Prime Numbers is ideal for developers needing test values, students checking homework, teachers making worksheets, or anyone who just needs a batch of clean primes. Whether you’re checking logic, seeding cryptographic tests, or building math puzzles, this tool gives you exactly what you need, with no distractions or delays. It’s fast, simple, and always accurate.

Useful Tools & Suggestions:

After generating primes, Calculate Prime Factors gives you a way to break down composite numbers and see what they’re made of. And if you’re testing lots of entries, Filter a List of Numbers helps keep things focused.

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