What is the Greatest Common Factor of 42129 and 42147?

Greatest common factor (GCF) of 42129 and 42147 is 9.

GCF(42129,42147) = 9

We will now calculate the prime factors of 42129 and 42147, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42129 and 42147.

How to find the GCF of 42129 and 42147?

We will first find the prime factorization of 42129 and 42147. After we will calculate the factors of 42129 and 42147 and find the biggest common factor number .

Step-1: Prime Factorization of 42129

Prime factors of 42129 are 3, 31, 151. Prime factorization of 42129 in exponential form is:

42129 = 3² × 31¹ × 151¹

Step-2: Prime Factorization of 42147

Prime factors of 42147 are 3, 7, 223. Prime factorization of 42147 in exponential form is:

42147 = 3³ × 7¹ × 223¹

Step-3: Factors of 42129

List of positive integer factors of 42129 that divides 42129 without a remainder.

1, 3, 9, 31, 93, 151, 279, 453, 1359, 4681, 14043

Step-4: Factors of 42147

List of positive integer factors of 42147 that divides 42129 without a remainder.

1, 3, 7, 9, 21, 27, 63, 189, 223, 669, 1561, 2007, 4683, 6021, 14049

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42129 and 42147. The biggest common factor number is the GCF number.
So the greatest common factor 42129 and 42147 is 9.

Also check out the Least Common Multiple of 42129 and 42147