Enter GCF or LCM numbers:
Determine GCF(36,18)
GCF = Largest factor that divides numbers
Determine the factors for 36
1,2,3,4,6,9,12,18
Determine the factors for 18
1,2,3,6,9,18
List the common factors
1,2,3,6,9,18
GCF(36,18) = 18
Evaluate GCF
Since GCF ≠ 1, they are not relatively prime (co-prime)
Since GCF ≠ 1 and have a difference of two, the numbers are not twin prime
