What is the Greatest Common Factor of 66129 and 66138?

Greatest common factor (GCF) of 66129 and 66138 is 3.

GCF(66129,66138) = 3

We will now calculate the prime factors of 66129 and 66138, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66129 and 66138.

How to find the GCF of 66129 and 66138?

We will first find the prime factorization of 66129 and 66138. After we will calculate the factors of 66129 and 66138 and find the biggest common factor number .

Step-1: Prime Factorization of 66129

Prime factors of 66129 are 3, 7, 47, 67. Prime factorization of 66129 in exponential form is:

66129 = 3¹ × 7¹ × 47¹ × 67¹

Step-2: Prime Factorization of 66138

Prime factors of 66138 are 2, 3, 73, 151. Prime factorization of 66138 in exponential form is:

66138 = 2¹ × 3¹ × 73¹ × 151¹

Step-3: Factors of 66129

List of positive integer factors of 66129 that divides 66129 without a remainder.

1, 3, 7, 21, 47, 67, 141, 201, 329, 469, 987, 1407, 3149, 9447, 22043

Step-4: Factors of 66138

List of positive integer factors of 66138 that divides 66129 without a remainder.

1, 2, 3, 6, 73, 146, 151, 219, 302, 438, 453, 906, 11023, 22046, 33069

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66129 and 66138. The biggest common factor number is the GCF number.
So the greatest common factor 66129 and 66138 is 3.

Also check out the Least Common Multiple of 66129 and 66138