Correct int type to size_t.
Add naive initialization loop for mpz_primes.
Correct int types to size_t.
Implement factor base generation.
Fix legendre computation. Implement sieve range calculation.
Implement basic quadratic sieve.
Hardcode an array size limit for sieve.
Remove an idiot's comments.

After reading that I wonder if he actually knew Tonelli-Shanks.
Find the mod sqrt solutions.
Implement up to differences of modular roots.