What is the Greatest Common Factor of 12429 and 12438?

Greatest common factor (GCF) of 12429 and 12438 is 9.

GCF(12429,12438) = 9

We will now calculate the prime factors of 12429 and 12438, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12429 and 12438.

How to find the GCF of 12429 and 12438?

We will first find the prime factorization of 12429 and 12438. After we will calculate the factors of 12429 and 12438 and find the biggest common factor number .

Step-1: Prime Factorization of 12429

Prime factors of 12429 are 3, 1381. Prime factorization of 12429 in exponential form is:

12429 = 3² × 1381¹

Step-2: Prime Factorization of 12438

Prime factors of 12438 are 2, 3, 691. Prime factorization of 12438 in exponential form is:

12438 = 2¹ × 3² × 691¹

Step-3: Factors of 12429

List of positive integer factors of 12429 that divides 12429 without a remainder.

1, 3, 9, 1381, 4143

Step-4: Factors of 12438

List of positive integer factors of 12438 that divides 12429 without a remainder.

1, 2, 3, 6, 9, 18, 691, 1382, 2073, 4146, 6219

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12429 and 12438. The biggest common factor number is the GCF number.
So the greatest common factor 12429 and 12438 is 9.

Also check out the Least Common Multiple of 12429 and 12438