The factors of 77 are: 1, 7, 11, 77 The factors of 51 are: 1, 3, 17, 51 The only common integer factor of 77 and 51 is 1.
The GCF is 1.
The GCF is: 27
The GCF is 3.
The GCF is 3.
The GCF is 1.
The GCF is 17.
The GCF is 1.
The GCF is 3.
The GCF for 29 51 is 1.
The GCF of 42 and 51 is 3.
255 = 51 x 5 so 51 is GCF