The GCF is 3.
What is the greatest common factor shared by 51 and 21?
The Greatest Common Factor (GCF) is: 3
The greatest factor of 21 and 16 is 21, which is a factor of 21 but not of 16.
It's 3
The GCF is 3.
The GCF is 1.
The greatest common factor of 21 and 77 is 7.
Because 21 is a factor of 63. 21 is the greatest factor of 21. A larger number doesn't exist.
The Greatest Common Factor of 21, 63, 84: 21
The GCF is 7.
The GCF is 3.
The greatest common factor of 21 and 75 is 3.