This is a small collection of sieves.
  1. The first is in pure Python, and is #!'d to pypy3.
  2. The second is in CPython with numpy.
  3. The third is in Java.
  4. The fourth runs on micropython, a python implementation intended for embedded systems that also runs on Linux.
  5. The fifth is is in Rust, and is the fastest version - even faster than Java.
Like any prime number sieve, these will compute the primes beneath a particular number.

You can obtain them here.

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Timestamp: 2025-11-04 02:54:28 PST

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