GCF of 80 and 200

Number 1Number 2(Optional) Enter Number 3

Determine the Greatest Common Factor (GCF) of (80,200)

Determine the factors for 80 up to 80 since that is the minimum of the 2 numbers
1,2,4,5,8,10,16,20,40,80

Determine the factors for 200 up to 80 since that is the minimum of the 2 numbers
1,2,4,5,8,10,20,25,40,50

The common factors between them are 1,2,4,5,8,10,20,40
The greatest common factor between them is 40
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