Enter GCF or LCM numbers:
Determine GCF(42,100)
GCF = Largest factor that divides numbers
Determine the factors for 42
1,2,3,6,7,14,21,42
Determine the factors for 100
1,2,4,5,10,20,25
List the common factors
1,2
GCF(42,100) = 2
GCF(42,100) = 2
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
