GCF of 120 and 23

Number 1Number 2(Optional) Enter Number 3

Determine the Greatest Common Factor (GCF) of (120,23)

Determine the factors for 120 up to 23 since that is the minimum of the 2 numbers
1,2,3,4,5,6,8,10,12,15,20

Determine the factors for 23 up to 23 since that is the minimum of the 2 numbers
1,23

The common factors between them are 1
The greatest common factor between them is 1
Since the Greatest Common Factor of both numbers is 1, the numbers are said to be 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