All whole numbers have a common factor of 1. One may or may not be the greatest common factor of two or more numbers, depending on their other factors.
The GCF is 6.
The GCF is 9.
The GCF is 4.
The GCF is 30.
50
The GCF is: 1
The GCF is 1.
The GCF is 27.
The GCF is 3.
The GCF is 2.
The GCF is 5.
The GCF of 125, 200 is 25.