MPQS : The quadratic sieve algorithm (QS) is an integer factorization algorithm, MPQS is the parallel version of it, this version is programmed in C using MPI.
#Compilation
mpicc -o factorize factorize.c -lgmp -lm
#execute
mpirun -np 1 --hostfile=hostfile ./factorize n
where np is the number of process and n is the semiprime to factorize