What is the Greatest Common Factor of 12340 and 12345?

Greatest common factor (GCF) of 12340 and 12345 is 5.

GCF(12340,12345) = 5

We will now calculate the prime factors of 12340 and 12345, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12340 and 12345.

How to find the GCF of 12340 and 12345?

We will first find the prime factorization of 12340 and 12345. After we will calculate the factors of 12340 and 12345 and find the biggest common factor number .

Step-1: Prime Factorization of 12340

Prime factors of 12340 are 2, 5, 617. Prime factorization of 12340 in exponential form is:

12340 = 2² × 5¹ × 617¹

Step-2: Prime Factorization of 12345

Prime factors of 12345 are 3, 5, 823. Prime factorization of 12345 in exponential form is:

12345 = 3¹ × 5¹ × 823¹

Step-3: Factors of 12340

List of positive integer factors of 12340 that divides 12340 without a remainder.

1, 2, 4, 5, 10, 20, 617, 1234, 2468, 3085, 6170

Step-4: Factors of 12345

List of positive integer factors of 12345 that divides 12340 without a remainder.

1, 3, 5, 15, 823, 2469, 4115

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12340 and 12345. The biggest common factor number is the GCF number.
So the greatest common factor 12340 and 12345 is 5.

Also check out the Least Common Multiple of 12340 and 12345