You need at least two numbers to find a GCF.
The 542 is cannot be because it's need 2 or more numbers.
They are: 1 542 2 and 271
1 and 23 1, 2, 271, 542
The greatest common factor of 12 and 20 is 4
The greatest factor of any number is the number itself.
The greatest factor of 15 is 15. The greatest factor of 20 is 20. The greatest common factor of 15 and 20 is 5.
1084
The greatest factor that two or more numbers have in common is known as the greatest common factor, or GCF.
3 is the greatest factor of 3.
The greatest factor of 712 is 712.
18 is the greatest factor of 18.
The greatest factor of 79 is 79.