You don't. You find the GCF of integers. What you count with the integers after that is up to you.
You do a factor rainbow to find a prime factorization. You compare prime factorizations to find a greatest common factor.
The greatest common factor (GCF) is 1.
The greatest common factor (GCF) is 6.
The Greatest Common Factor (GCF) is: 12
The greatest common factor (GCF) is 2.
The greatest common factor (GCF) is 4.
The greatest common factor (GCF) is 3.
The greatest common factor (GCF) is 5.
The only factor they have in common is 1. It has to be the greatest.
Two or more numbers are required to find the greatest common factor between them.
No, you need at least two numbers to compare in order to find a greatest common factor.
There is no Greatest Common Factor (GCF) for a single number. The Greatest Common Factor (GCF) is the largest factor common to two or more given numbers.