The GCF is 13.
The GCF of 1 and 91 is 1. The GCF of 91 and 91 is 91.
The GCF of 1218 and 42 is 42. The GCF of 12, 18 and 42 is 6.
The GCF is 1.
The GCF is 7.
The GCF is 13.
The GCF is 13.
gcf of 91 and 21 = 7
The GCF of 77 and 91 is 7.
The GCF of 2877 and 91 is 7
The GCF of 14 and 91 = 7
The GCF is 21.