What is the Greatest Common Factor of 12915 and 12929?

Greatest common factor (GCF) of 12915 and 12929 is 7.

GCF(12915,12929) = 7

We will now calculate the prime factors of 12915 and 12929, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12915 and 12929.

How to find the GCF of 12915 and 12929?

We will first find the prime factorization of 12915 and 12929. After we will calculate the factors of 12915 and 12929 and find the biggest common factor number .

Step-1: Prime Factorization of 12915

Prime factors of 12915 are 3, 5, 7, 41. Prime factorization of 12915 in exponential form is:

12915 = 3² × 5¹ × 7¹ × 41¹

Step-2: Prime Factorization of 12929

Prime factors of 12929 are 7, 1847. Prime factorization of 12929 in exponential form is:

12929 = 7¹ × 1847¹

Step-3: Factors of 12915

List of positive integer factors of 12915 that divides 12915 without a remainder.

1, 3, 5, 7, 9, 15, 21, 35, 41, 45, 63, 105, 123, 205, 287, 315, 369, 615, 861, 1435, 1845, 2583, 4305

Step-4: Factors of 12929

List of positive integer factors of 12929 that divides 12915 without a remainder.

1, 7, 1847

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12915 and 12929. The biggest common factor number is the GCF number.
So the greatest common factor 12915 and 12929 is 7.

Also check out the Least Common Multiple of 12915 and 12929