What is the Greatest Common Factor of 1311 and 1323?

Greatest common factor (GCF) of 1311 and 1323 is 3.

GCF(1311,1323) = 3

We will now calculate the prime factors of 1311 and 1323, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1311 and 1323.

How to find the GCF of 1311 and 1323?

We will first find the prime factorization of 1311 and 1323. After we will calculate the factors of 1311 and 1323 and find the biggest common factor number .

Step-1: Prime Factorization of 1311

Prime factors of 1311 are 3, 19, 23. Prime factorization of 1311 in exponential form is:

1311 = 3¹ × 19¹ × 23¹

Step-2: Prime Factorization of 1323

Prime factors of 1323 are 3, 7. Prime factorization of 1323 in exponential form is:

1323 = 3³ × 7²

Step-3: Factors of 1311

List of positive integer factors of 1311 that divides 1311 without a remainder.

1, 3, 19, 23, 57, 69, 437

Step-4: Factors of 1323

List of positive integer factors of 1323 that divides 1311 without a remainder.

1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1311 and 1323. The biggest common factor number is the GCF number.
So the greatest common factor 1311 and 1323 is 3.

Also check out the Least Common Multiple of 1311 and 1323