4 ms·

I'd guess it is probably for Project Euler.

• logicallee 10y ago
  that "probably" makes me wonder why you would say that? is there something about 50 million primes in there?
  • omaranto 10y ago
    I don't think you really need that many primes for Project Euler, but I can certainly imagine someone tired of including a call to her prime sieve in tons of problems, and of having to waiting for it to run, and thinking, "let's just make a library that has all the primes I could possibly need in a constant array".