What is the Greatest Common Factor of 12438 and 12458?

Greatest common factor (GCF) of 12438 and 12458 is 2.

GCF(12438,12458) = 2

We will now calculate the prime factors of 12438 and 12458, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12438 and 12458.

How to find the GCF of 12438 and 12458?

We will first find the prime factorization of 12438 and 12458. After we will calculate the factors of 12438 and 12458 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 12458

Prime factors of 12458 are 2, 6229. Prime factorization of 12458 in exponential form is:

12458 = 2¹ × 6229¹

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 12458

List of positive integer factors of 12458 that divides 12438 without a remainder.

1, 2, 6229

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12438 and 12458. The biggest common factor number is the GCF number.
So the greatest common factor 12438 and 12458 is 2.

Also check out the Least Common Multiple of 12438 and 12458