What is the Greatest Common Factor of 12645 and 12663?

Greatest common factor (GCF) of 12645 and 12663 is 9.

GCF(12645,12663) = 9

We will now calculate the prime factors of 12645 and 12663, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12645 and 12663.

How to find the GCF of 12645 and 12663?

We will first find the prime factorization of 12645 and 12663. After we will calculate the factors of 12645 and 12663 and find the biggest common factor number .

Step-1: Prime Factorization of 12645

Prime factors of 12645 are 3, 5, 281. Prime factorization of 12645 in exponential form is:

12645 = 3² × 5¹ × 281¹

Step-2: Prime Factorization of 12663

Prime factors of 12663 are 3, 7, 67. Prime factorization of 12663 in exponential form is:

12663 = 3³ × 7¹ × 67¹

Step-3: Factors of 12645

List of positive integer factors of 12645 that divides 12645 without a remainder.

1, 3, 5, 9, 15, 45, 281, 843, 1405, 2529, 4215

Step-4: Factors of 12663

List of positive integer factors of 12663 that divides 12645 without a remainder.

1, 3, 7, 9, 21, 27, 63, 67, 189, 201, 469, 603, 1407, 1809, 4221

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12645 and 12663. The biggest common factor number is the GCF number.
So the greatest common factor 12645 and 12663 is 9.

Also check out the Least Common Multiple of 12645 and 12663