What is the Greatest Common Factor of 12385 and 12397?

Greatest common factor (GCF) of 12385 and 12397 is 1.

GCF(12385,12397) = 1

We will now calculate the prime factors of 12385 and 12397, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12385 and 12397.

How to find the GCF of 12385 and 12397?

We will first find the prime factorization of 12385 and 12397. After we will calculate the factors of 12385 and 12397 and find the biggest common factor number .

Step-1: Prime Factorization of 12385

Prime factors of 12385 are 5, 2477. Prime factorization of 12385 in exponential form is:

12385 = 5¹ × 2477¹

Step-2: Prime Factorization of 12397

Prime factors of 12397 are 7, 11, 23. Prime factorization of 12397 in exponential form is:

12397 = 7² × 11¹ × 23¹

Step-3: Factors of 12385

List of positive integer factors of 12385 that divides 12385 without a remainder.

1, 5, 2477

Step-4: Factors of 12397

List of positive integer factors of 12397 that divides 12385 without a remainder.

1, 7, 11, 23, 49, 77, 161, 253, 539, 1127, 1771

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12385 and 12397. The biggest common factor number is the GCF number.
So the greatest common factor 12385 and 12397 is 1.

Also check out the Least Common Multiple of 12385 and 12397