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# What is the greatest common factor of 21 and 31?

Updated: 4/28/2022

Wiki User

7y ago

The greatest common factor of 21 and 31 is 1

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 factors of 21 are: 1, 3, 7, 21

The factors of 31 are: 1, 31

The common factors are: 1

• The Greatest Common Factor (GCF) is: 1

Wiki User

7y ago

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Q: What is the greatest common factor of 21 and 31?
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