GCF of 65 and 52

Number 1Number 2(Optional) Enter Number 3

Determine the Greatest Common Factor (GCF) of (65,52)

Determine the factors for 65 up to 52 since that is the minimum of the 2 numbers
1,5,13

Determine the factors for 52 up to 52 since that is the minimum of the 2 numbers
1,2,4,13,26,52

The common factors between them are 1,13
The greatest common factor between them is 13
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