There is no gcf. The factors of 81 are 1, 3, 9, 27, and 81. 3, 9, 27, and 81 do not go into 256 evenly. Therefore, there are no common factors.
The GCF is 1.
The GCF is 128.
gcf(116, 256) = 4.
The greatest common factor (GCF) of 640 and 256 is 128.
The greatest common factor (GCF) of 256 and 80 is 16.
The GCF is: 1
The GCF is 1.
The GCF is 64.
The GCF is 8.
The GCF of 255 and 256 is 1.
The GCF is 27.