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.
Since 53 is a single number, you could say that it shares all of its factors with itself. So the greatest factor of 53 is 53
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This cannot be determined based on the number you provided. You must have at least two whole numbers to determine a greatest common factor. Leave a space between the digits if you want to specify two or more numbers.
The GCF of 53 and 81 is 1.
The Greatest Common Factor (GCF) is: 1
The GCF of 20 and 53 is 1.
The GCF is 1.
The GCF is 1.