17 , 51

Find the common factors for the numerical part:

17,51

The factors for 17 are all numbers between 1 and 17, which divide 17 evenly.

Check numbers between 1 and 17

Find the factor pairs of 17 where x⋅y=17.

xy117

List the factors for 17.

1,17

1,17

The factors for 51 are all numbers between 1 and 51, which divide 51 evenly.

Check numbers between 1 and 51

Find the factor pairs of 51 where x⋅y=51.

xy151317

List the factors for 51.

1,3,17,51

1,3,17,51

List all the factors for 17,51 to find the common factors.

17: 1,17

51: 1,3,17,51

The common factors for 17,51 are 1,17.

1,17

The GCF (HCF) of the numerical factors 1,17 is 17.

17

Find the GCF 17 , 51