Why is 17 the greatest common factor of 51 and 85?

Answer 1

The factors of 51 are:

1, 3, 17, 51

The factors of 85 are:

1, 5, 17, 85

The common factors are:

1, 17

The Greatest Common Factor:

GCF = 17

Answer 2

The greatest common factor of 51 and 87 is 3.

Answer 3

• Factors of 53: 1, 53
• Factors of 17: 1, 17
• GCF (53, 17) = 1

Answer 4

Because among all the factors that are common to 51 and 85, 17 is the largest/greatest/highest/biggest number

Answer 5

17