What is the Greatest Common Factor of 78909 and 78928?

Greatest common factor (GCF) of 78909 and 78928 is 1.

GCF(78909,78928) = 1

We will now calculate the prime factors of 78909 and 78928, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78909 and 78928.

How to find the GCF of 78909 and 78928?

We will first find the prime factorization of 78909 and 78928. After we will calculate the factors of 78909 and 78928 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 78928

Prime factors of 78928 are 2, 4933. Prime factorization of 78928 in exponential form is:

78928 = 2⁴ × 4933¹

Step-3: Factors of 78909

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

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

Step-4: Factors of 78928

List of positive integer factors of 78928 that divides 78909 without a remainder.

1, 2, 4, 8, 16, 4933, 9866, 19732, 39464

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78909 and 78928. The biggest common factor number is the GCF number.
So the greatest common factor 78909 and 78928 is 1.

Also check out the Least Common Multiple of 78909 and 78928