It is: 9
gcf of 115 and 207 is 23.
gcf of 138 and 207 is 69.
The GCF is: 1
The GCF is 1.
The GCF is 9.
23 115/23=5 207/23=9
The greatest common factor of the numbers 180 and 150 is 30.
The GCF is 45.
The GCF is 60.
The GCF is 180.
The GCF is 20.
The GCF is 4.