The GCF applies to integers, not fractions.
The greatest common factor of two and four is 2.
four
The greatest common factor of 40 and 65 is 5
The greatest common factor is four.
The greatest common factor is four.
The Greatest Common Factor is four.
The Greatest Common Factor is four.
The Greatest Common Factor is four.
Four.
There is only one greatest common factor, which is 2. The only other common factor is 1.
four
It is four.(4)