GCF of 36 and 45

Number 1Number 2(Optional) Enter Number 3

Determine the Greatest Common Factor (GCF) of (36,45)

Determine the factors for 36 up to 36 since that is the minimum of the 2 numbers
1,2,3,4,6,9,12,18,36

Determine the factors for 45 up to 36 since that is the minimum of the 2 numbers
1,3,5,9,15

The common factors between them are 1,3,9
The greatest common factor between them is 9
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