Enter GCF or LCM numbers:
Determine GCF(90,100)
GCF = Largest factor that divides numbers
Determine the factors for 90
1,2,3,5,6,9,10,15,18,30,45,90
Determine the factors for 100
1,2,4,5,10,20,25,50
List the common factors
1,2,5,10
GCF(90,100) = 10
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
