What is the Greatest Common Factor of 12228 and 12243?

Greatest common factor (GCF) of 12228 and 12243 is 3.

GCF(12228,12243) = 3

We will now calculate the prime factors of 12228 and 12243, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12228 and 12243.

How to find the GCF of 12228 and 12243?

We will first find the prime factorization of 12228 and 12243. After we will calculate the factors of 12228 and 12243 and find the biggest common factor number .

Step-1: Prime Factorization of 12228

Prime factors of 12228 are 2, 3, 1019. Prime factorization of 12228 in exponential form is:

12228 = 2² × 3¹ × 1019¹

Step-2: Prime Factorization of 12243

Prime factors of 12243 are 3, 7, 11, 53. Prime factorization of 12243 in exponential form is:

12243 = 3¹ × 7¹ × 11¹ × 53¹

Step-3: Factors of 12228

List of positive integer factors of 12228 that divides 12228 without a remainder.

1, 2, 3, 4, 6, 12, 1019, 2038, 3057, 4076, 6114

Step-4: Factors of 12243

List of positive integer factors of 12243 that divides 12228 without a remainder.

1, 3, 7, 11, 21, 33, 53, 77, 159, 231, 371, 583, 1113, 1749, 4081

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12228 and 12243. The biggest common factor number is the GCF number.
So the greatest common factor 12228 and 12243 is 3.

Also check out the Least Common Multiple of 12228 and 12243