gcdexist:gcd and existence
gcdfind:Find gcd
gcdfind3:Find gcd-3
gcdfindb:Find gcd II
gcdlcm:gcd and lcm
gcdlcm2:gcd and lcm II
gcdlcm3:gcd and lcm III
gcdlcmprod:gcd; lcm and product
gcdlcmsum:gcd; lcm and sum
gcdmult:gcd and multiple
gcdprod:gcd and product
gcdsum:gcd and sum
gcdsumprod:gcd; sum and product
lcmfind:Find lcm
lcmfind3:Find lcm-3
lcmprod:lcm and product
lcmsum:lcm and sum
lcmsumprod:lcm; sum and product
