What is the Greatest Common Factor of 12438 and 12447?

Greatest common factor (GCF) of 12438 and 12447 is 9.

GCF(12438,12447) = 9

We will now calculate the prime factors of 12438 and 12447, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12438 and 12447.

How to find the GCF of 12438 and 12447?

We will first find the prime factorization of 12438 and 12447. After we will calculate the factors of 12438 and 12447 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 12447

Prime factors of 12447 are 3, 461. Prime factorization of 12447 in exponential form is:

12447 = 3³ × 461¹

Step-3: Factors of 12438

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

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

Step-4: Factors of 12447

List of positive integer factors of 12447 that divides 12438 without a remainder.

1, 3, 9, 27, 461, 1383, 4149

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12438 and 12447. The biggest common factor number is the GCF number.
So the greatest common factor 12438 and 12447 is 9.

Also check out the Least Common Multiple of 12438 and 12447