calculator greatest common factor: calculate GCF math

Online calculator: Greatest common factor math. Online Calculators: Greatest Common Factor Example: You need to find the greatest common factor between two or three numbers. The greatest common factor means the greatest factor that divides two or three numbers.


Calculate greatest common factor (GCF) math


First Number:
Second Number:
Third Number (optional):



Answer: is the Greatest Common Factor (GCF)

If Greatest Common Factor is "1", there is no greatest common factor.


How to find GCF Online? To find the greatest common factor of 12 and 20, you need to list prime factors of each number. After you find the prime factors, multiply the factors which are in common from both numbers. For example, if a common factor is a number 2 and a number 4, multiply them. The result will be the greatest common factor. If there are no common numbers, the answer is always "1".

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