Enter GCF or LCM numbers:
Determine GCF(45,380)
GCF = Largest factor that divides numbers
Determine the factors for 45
1,3,5,9,15,45
Determine the factors for 380
1,2,4,5,10,19,20,38
List the common factors
1,5
GCF(45,380) = 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
