The Greatest Common Factor is 1. If you just list all the numbers that go into nine evenly, you will find that the only number they have in common is 1.
The GCF is 1.
It is: 342
It works out as just 1
The Greatest Common Factor (GCF) is: 9
The Greatest Common Factor (GCF) is: 9
The greatest common factor of 9 and 25 is 1
The greatest common factor of 9 , 8 = 1
The greatest common factor of 9 and 620 is 1.
The Greatest Common Factor of 9, 23 is 1.
The greatest common factor of 9 and 618 is 3
The Greatest Common Factor of 60, 21, 9: 3
The Greatest Common Factor of 81, 108, 117: 9