What is the Greatest Common Factor of 12387 and 12393?

Greatest common factor (GCF) of 12387 and 12393 is 3.

GCF(12387,12393) = 3

We will now calculate the prime factors of 12387 and 12393, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12387 and 12393.

How to find the GCF of 12387 and 12393?

We will first find the prime factorization of 12387 and 12393. After we will calculate the factors of 12387 and 12393 and find the biggest common factor number .

Step-1: Prime Factorization of 12387

Prime factors of 12387 are 3, 4129. Prime factorization of 12387 in exponential form is:

12387 = 3¹ × 4129¹

Step-2: Prime Factorization of 12393

Prime factors of 12393 are 3, 17. Prime factorization of 12393 in exponential form is:

12393 = 3⁶ × 17¹

Step-3: Factors of 12387

List of positive integer factors of 12387 that divides 12387 without a remainder.

1, 3, 4129

Step-4: Factors of 12393

List of positive integer factors of 12393 that divides 12387 without a remainder.

1, 3, 9, 17, 27, 51, 81, 153, 243, 459, 729, 1377, 4131

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12387 and 12393. The biggest common factor number is the GCF number.
So the greatest common factor 12387 and 12393 is 3.

Also check out the Least Common Multiple of 12387 and 12393