What is the Greatest Common Factor of 12315 and 12324?

Greatest common factor (GCF) of 12315 and 12324 is 3.

GCF(12315,12324) = 3

We will now calculate the prime factors of 12315 and 12324, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12315 and 12324.

How to find the GCF of 12315 and 12324?

We will first find the prime factorization of 12315 and 12324. After we will calculate the factors of 12315 and 12324 and find the biggest common factor number .

Step-1: Prime Factorization of 12315

Prime factors of 12315 are 3, 5, 821. Prime factorization of 12315 in exponential form is:

12315 = 3¹ × 5¹ × 821¹

Step-2: Prime Factorization of 12324

Prime factors of 12324 are 2, 3, 13, 79. Prime factorization of 12324 in exponential form is:

12324 = 2² × 3¹ × 13¹ × 79¹

Step-3: Factors of 12315

List of positive integer factors of 12315 that divides 12315 without a remainder.

1, 3, 5, 15, 821, 2463, 4105

Step-4: Factors of 12324

List of positive integer factors of 12324 that divides 12315 without a remainder.

1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 79, 156, 158, 237, 316, 474, 948, 1027, 2054, 3081, 4108, 6162

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12315 and 12324. The biggest common factor number is the GCF number.
So the greatest common factor 12315 and 12324 is 3.

Also check out the Least Common Multiple of 12315 and 12324