Project Euler solutions (source code)

= Project Euler solutions

Repositories of numerical solutions:
* https://github.com/lucky-bai/projecteuler-solutions
* https://www.kaggle.com/datasets/dheerajmpai/projecteuler

Repositories of code solutions:
* https://euler.stephan-brumme.com/ large number of solutions in <C++>, stopped around 600. Informal permissive license, e.g. at: https://euler.stephan-brumme.com/243/
  > I hope you enjoy my code and learn something - or give me feedback how I can improve my solutions.

    All of my solutions can be used for any purpose and I am in no way liable for any damages caused.

    You can even remove my name and claim it's yours. But then you shall burn in hell.
  Asked for a more formal open license at: https://github.com/stbrumme/euler/issues/7
* https://www.ivl-projecteuler.com/home 330+ solutions in <Python> as of 2025. Random looking problem selection. On GitHub: https://github.com/igorvanloo/Project-Euler-Explained[] under <Unlicense> license, a <public domain> license.
* https://www.nayuki.io/page/project-euler-solutions[]. Large number of solutions, mostly in <Java> and	<Python> primarily but also <Mathematica> and <Haskell> sometimes. Proprietary license.

Repositories with hints but no solutions:
* https://github.com/RodericGuigoCorominas/project-euler

Basically no one has ever had the patience to create a single source that solves them all, all the above were done by individuals and stopped at some point. What we need is either a collaborative solution, or... <LLMs>.