GCF of 26 and 28

Number 1Number 2(Optional) Enter Number 3

Determine the Greatest Common Factor (GCF) of (26,28)

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

Determine the factors for 28 up to 26 since that is the minimum of the 2 numbers
1,2,4,7,14

The common factors between them are 1,2
The greatest common factor between them is 2
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