GCF of 17 and 68

Number 1Number 2(Optional) Enter Number 3
            

Determine the Greatest Common Factor (GCF) of (17,68)

Determine the factors for 17 up to 17 since that is the minimum of the 2 numbers
1,17

Determine the factors for 68 up to 17 since that is the minimum of the 2 numbers
1,2,4,17

The common factors between them are 1,17
The greatest common factor between them is 17
Since the Greatest Common Factor of both numbers ≠ 1, the numbers are not relatively prime (co-prime)
Since the Greatest Common Factor of Both Numbers is both ≠ 1 and have a difference of two, the numbers are not twin prime
To see the LCM of these numbers, click the LCM button above