LOCACHE

Prime Checker

Whether a whole number is prime

Request a feature or report a bug: locache.download@gmail.com

About Prime Checker

Whether a whole number is prime. Runs entirely in your browser. Nothing is uploaded.

How to use

  1. 1
    Open the tool: Open Prime Checker.
  2. 2
    Add your input: Type, paste, or choose a file. Processing stays on this device.
  3. 3
    Use the result: Copy the output. Do not include secrets in a shared link.