What is the greatest common factor of 12 18 and 14?

Since 18 is 9 and 14 is 7 after dividing by 2, and 12 is 6, the only even number, it is the only one that can be divided by 2 again. But, the other two numbers (9 and 7) can't be divided by 2 anymore, therefore, the GCF is 2