What is the Greatest Common Factor of 12861 and 12867?

Greatest common factor (GCF) of 12861 and 12867 is 3.

GCF(12861,12867) = 3

We will now calculate the prime factors of 12861 and 12867, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12861 and 12867.

How to find the GCF of 12861 and 12867?

We will first find the prime factorization of 12861 and 12867. After we will calculate the factors of 12861 and 12867 and find the biggest common factor number .

Step-1: Prime Factorization of 12861

Prime factors of 12861 are 3, 1429. Prime factorization of 12861 in exponential form is:

12861 = 3² × 1429¹

Step-2: Prime Factorization of 12867

Prime factors of 12867 are 3, 4289. Prime factorization of 12867 in exponential form is:

12867 = 3¹ × 4289¹

Step-3: Factors of 12861

List of positive integer factors of 12861 that divides 12861 without a remainder.

1, 3, 9, 1429, 4287

Step-4: Factors of 12867

List of positive integer factors of 12867 that divides 12861 without a remainder.

1, 3, 4289

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12861 and 12867. The biggest common factor number is the GCF number.
So the greatest common factor 12861 and 12867 is 3.

Also check out the Least Common Multiple of 12861 and 12867