Enter GCF or LCM numbers:
Determine GCF(3,12)
GCF = Largest factor that divides numbers
Determine the factors for 3
1,3
Determine the factors for 12
1,2,3
List the common factors
1,3
GCF(3,12) = 3
GCF(3,12) = 3
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
