l GCF of 6 and 9

Enter GCF or LCM numbers:

Number 1Number 2(Optional) Enter Number 3
            

Determine GCF(6,9)

GCF = Largest factor that divides numbers

Determine the factors for 6

1,2,3,6

Determine the factors for 9

1,3

List the common factors

1,3



GCF(6,9) = 3

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

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