What is the Greatest Common Factor of 12555 and 12564?

Greatest common factor (GCF) of 12555 and 12564 is 9.

GCF(12555,12564) = 9

We will now calculate the prime factors of 12555 and 12564, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12555 and 12564.

How to find the GCF of 12555 and 12564?

We will first find the prime factorization of 12555 and 12564. After we will calculate the factors of 12555 and 12564 and find the biggest common factor number .

Step-1: Prime Factorization of 12555

Prime factors of 12555 are 3, 5, 31. Prime factorization of 12555 in exponential form is:

12555 = 3⁴ × 5¹ × 31¹

Step-2: Prime Factorization of 12564

Prime factors of 12564 are 2, 3, 349. Prime factorization of 12564 in exponential form is:

12564 = 2² × 3² × 349¹

Step-3: Factors of 12555

List of positive integer factors of 12555 that divides 12555 without a remainder.

1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 279, 405, 465, 837, 1395, 2511, 4185

Step-4: Factors of 12564

List of positive integer factors of 12564 that divides 12555 without a remainder.

1, 2, 3, 4, 6, 9, 12, 18, 36, 349, 698, 1047, 1396, 2094, 3141, 4188, 6282

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12555 and 12564. The biggest common factor number is the GCF number.
So the greatest common factor 12555 and 12564 is 9.

Also check out the Least Common Multiple of 12555 and 12564