Enter GCF or LCM numbers:
Determine GCF(20,100)
GCF = Largest factor that divides numbers
Determine the factors for 20
1,2,4,5,10,20
Determine the factors for 100
1,2,4,5,10,20
List the common factors
1,2,4,5,10,20
GCF(20,100) = 20
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
