What is the Greatest Common Factor of 78891 and 78909?

Greatest common factor (GCF) of 78891 and 78909 is 3.

GCF(78891,78909) = 3

We will now calculate the prime factors of 78891 and 78909, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78891 and 78909.

How to find the GCF of 78891 and 78909?

We will first find the prime factorization of 78891 and 78909. After we will calculate the factors of 78891 and 78909 and find the biggest common factor number .

Step-1: Prime Factorization of 78891

Prime factors of 78891 are 3, 26297. Prime factorization of 78891 in exponential form is:

78891 = 3¹ × 26297¹

Step-2: Prime Factorization of 78909

Prime factors of 78909 are 3, 29, 907. Prime factorization of 78909 in exponential form is:

78909 = 3¹ × 29¹ × 907¹

Step-3: Factors of 78891

List of positive integer factors of 78891 that divides 78891 without a remainder.

1, 3, 26297

Step-4: Factors of 78909

List of positive integer factors of 78909 that divides 78891 without a remainder.

1, 3, 29, 87, 907, 2721, 26303

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78891 and 78909. The biggest common factor number is the GCF number.
So the greatest common factor 78891 and 78909 is 3.

Also check out the Least Common Multiple of 78891 and 78909