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Prime Number Generator

List the first N primes or all primes up to a limit. Paste your input, choose an option and copy the result. It runs in your browser, so your text is never uploaded.

Result
What Prime Number Generator does
List the first N primes or all primes up to a limit. Enter a number or list of numbers, pick an option and the result appears instantly.
Prime Number Generator offers 2 modes: First N primes, Primes up to N.
How to use Prime Number Generator
  1. Open Prime Number Generator.
  2. Set the options you want (count or upper limit).
  3. Click one of the buttons, such as First N primes.
  4. Copy the result with one click.
About Prime Number Generator
Number bases, binary logic and sequences come up in programming, electronics and maths classes. A general calculator rarely handles them well.
These tools work with exact whole numbers of any size and explain errors clearly, so you can trust the answer and see what went wrong when an input is invalid.
Prime Number Generator FAQ
What is Prime Number Generator?
Prime Number Generator is a free online tool. List the first N primes or all primes up to a limit. Enter a number or list of numbers, pick an option and the result appears instantly.
How do I use Prime Number Generator?
Open Prime Number Generator. Set the options you want (count or upper limit). Click one of the buttons, such as First N primes. Copy the result with one click.
Is Prime Number Generator free to use?
Yes. It is completely free, with no usage limits, watermarks or paid tiers.
Do I need to sign up or install anything?
No. Open the page and start using it. There is no account, download or browser extension.
Is my data safe when I use Prime Number Generator?
Yes. All calculations run in your browser and nothing is sent anywhere.
What options does Prime Number Generator include?
Prime Number Generator offers 2 modes: First N primes, Primes up to N. You can also set: count or upper limit.
Does Prime Number Generator work on my phone or tablet?
Yes. The layout adapts to any screen size, and the tool works in mobile browsers on iOS and Android.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox and Safari. JavaScript must be enabled.
Can I use the output of Prime Number Generator commercially?
Yes. The result is yours to use in personal and commercial projects without attribution.
Is there a limit on how much I can enter?
There is no fixed limit. Very large inputs depend on your device's memory and may feel slower on older phones.
How do I copy the result?
Click the Copy button above the Result box. For tools that transform text, Use as input moves the result back to the input so you can apply another change.
Can I use Prime Number Generator offline?
After the page has loaded, yes. Processing happens in your browser, so the tool keeps working even if your connection drops.
Why do I see an error or an empty result?
A message appears when a value is not valid for the chosen base or format, for example a digit that does not exist in binary.
How reliable are the results from Prime Number Generator?
Calculations use arbitrary precision integers where it matters, so large numbers stay exact. Decimal results are limited by normal floating point precision.
Can Prime Number Generator handle many items at once?
Yes. Paste as much as you need and the whole input is processed in one go.
Where is Prime Number Generator useful in real work?
Computer science and electronics homework; Converting numbers while debugging code; Exploring sequences and constants; Quick checks without opening a calculator.
Which tools are related to Prime Number Generator?
You may also like Seconds to Time Converter, Roman Numeral Converter, Scientific Notation Converter, Number Base Converter. All of them are free and work in the same way.
Can it handle very large numbers?
Yes. Integer conversions use arbitrary precision, so numbers are not rounded.
Can I convert several numbers at once?
Yes. Put one number per line and every line is converted.
Are negative numbers supported?
Base conversions accept a leading minus sign. Binary logic tools work on unsigned bit strings.
How can I report a problem or suggest a tool?
Use the contact link in the footer. Bug reports and tool ideas are welcome, and popular requests are added regularly.
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