The GCF is 13.
The GCF is 13.
The GCF is 13.
The GCF is 13.
The GCF is 13.
The GCF is 13.
The GCF is 13. 39=13*3 169=13*13
The GCF is 1.
GCF(39, 654, 91) = 1.
The GCF is 13.
The GCF is 13.
The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question! The greatest factor of any number is itself.