Concurrent prime finder using POSIX threads made for fun. Not necessarily optimal. Only works on Linux due to the clock functions used.
Type make in the cloned folder. You're welcome!
./qeo [primes] [threads]
primes is an integer >= 2 and <= MAX_PRIMES, set to 1000000 by default. Change at your own risk.
threads is an integer >= 2 and <= MAX_THREADS, set to 1000 by default