GCF of 256 and 100

Number 1Number 2(Optional) Enter Number 3

Determine the Greatest Common Factor (GCF) of (256,100)

Determine the factors for 256 up to 100 since that is the minimum of the 2 numbers
1,2,4,8,16,32,64

Determine the factors for 100 up to 100 since that is the minimum of the 2 numbers
1,2,4,5,10,20,25,50,100

The common factors between them are 1,2,4
The greatest common factor between them is 4
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