Asked in Factoring and Multiples
What is the greatest common factor of 21 and 105?
February 08, 2010 2:58AM
The greatest common factor (GCF) is often also called the
greatest common divisor (GCD) or highest common factor (HCF). Keep
in mind that these different terms all refer to the same thing: the
largest integer which evenly divides two or more numbers.
The greatest common factor of 21 and 105 is 21.