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GCF of 558 and 620

What is the GCF of 558 and 620? - The GCF of 558 and 620 is 62. Follow the step by step instructions on how to find the great common factor of 558 and 620.

Greatest Common Factor of 558 and 620

Number 1:
Number 2:

What is the greatest common factor of 558 and 620?

Answer: 62

How to find the gcf of 558 and 620?

Method 1 - Listing Factors

To find the gcf of 558 and 620, we first need to find the factors of 558 and 620 and then choose the greatest common factor that are dividable by both 558 and 620.

Factors of 558 = 1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279, 558
Factors of 620 = 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620

The greatest common factor of 558 and 620 is 62, because 62 is the largest number that is divisible by both numbers.





Method 2 - Prime Factorization

Another method to find the greatest common factor of 558 and 620 is by using the prime factorization method.
To use prime factorization, we first need to find the prime factors of 558 and 620, and then get the GCF by multiplying all the common prime factors from the two sets.

Prime factorization of 558 = 2 x 3 x 3 x 31
Prime factorization of 620 = 2 x 2 x 5 x 31
Common prime factors = 2 x 31 = 62

GCF of 557 and 620
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