Enter GCF or LCM numbers:
Determine GCF(65,100)
GCF = Largest factor that divides numbers
Determine the factors for 65
1,5,13,65
Determine the factors for 100
1,2,4,5,10,20,25,50
List the common factors
1,5
GCF(65,100) = 5
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
