What is the Greatest Common Factor of 42039 and 42057?

Greatest common factor (GCF) of 42039 and 42057 is 9.

GCF(42039,42057) = 9

We will now calculate the prime factors of 42039 and 42057, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42039 and 42057.

How to find the GCF of 42039 and 42057?

We will first find the prime factorization of 42039 and 42057. After we will calculate the factors of 42039 and 42057 and find the biggest common factor number .

Step-1: Prime Factorization of 42039

Prime factors of 42039 are 3, 173. Prime factorization of 42039 in exponential form is:

42039 = 3⁵ × 173¹

Step-2: Prime Factorization of 42057

Prime factors of 42057 are 3, 4673. Prime factorization of 42057 in exponential form is:

42057 = 3² × 4673¹

Step-3: Factors of 42039

List of positive integer factors of 42039 that divides 42039 without a remainder.

1, 3, 9, 27, 81, 173, 243, 519, 1557, 4671, 14013

Step-4: Factors of 42057

List of positive integer factors of 42057 that divides 42039 without a remainder.

1, 3, 9, 4673, 14019

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42039 and 42057. The biggest common factor number is the GCF number.
So the greatest common factor 42039 and 42057 is 9.

Also check out the Least Common Multiple of 42039 and 42057