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Online Calculators > Math Calculators
GCF of 19 and 57
What is the GCF of 19 and 57? - The GCF of 19 and 57 is 19.
Follow the step by step instructions on how to find the great common factor of 19 and 57.
What is the greatest common factor of 19 and 57?
How to find the gcf of 19 and 57?
Method 1 - Listing Factors
To find the gcf of 19 and 57, we first need to find the factors of 19 and 57 and then choose the greatest common factor that are dividable by both 19 and 57.
Factors of 19 = 1, 19
Factors of 57 = 1, 3, 19, 57
The greatest common factor of 19 and 57 is 19, because 19 is the largest number that is divisible by both numbers.
Method 2 - Prime Factorization
Another method to find the greatest common factor of 19 and 57 is by using the prime factorization method.
To use prime factorization, we first need to find the prime factors of 19 and 57, and then get the GCF by multiplying all the common prime factors from the two sets.
Prime factorization of 19 = 19
Prime factorization of 57 = 3 x 19
Common prime factors = 19 = 19
GCF of 18 and 57
GCF of 20 and 57
GCF of 19 and 58
GCF of 19 and 56
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