Added primes.cpp
Added primes.cpp

primes.cpp can calculate the following:
- Least common multiple
- Greatest common divisor
- Prime factorization

At start there will be filled an array with the first 1000 primes. Code will work with this array later on!
SigmaHyperon/nano,SigmaHyperon/nano,SigmaHyperon/nano,SigmaHyperon/nano