What is the Greatest Common Factor of 78297 and 78309?

Greatest common factor (GCF) of 78297 and 78309 is 3.

GCF(78297,78309) = 3

We will now calculate the prime factors of 78297 and 78309, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78297 and 78309.

How to find the GCF of 78297 and 78309?

We will first find the prime factorization of 78297 and 78309. After we will calculate the factors of 78297 and 78309 and find the biggest common factor number .

Step-1: Prime Factorization of 78297

Prime factors of 78297 are 3, 26099. Prime factorization of 78297 in exponential form is:

78297 = 3¹ × 26099¹

Step-2: Prime Factorization of 78309

Prime factors of 78309 are 3, 7, 11, 113. Prime factorization of 78309 in exponential form is:

78309 = 3² × 7¹ × 11¹ × 113¹

Step-3: Factors of 78297

List of positive integer factors of 78297 that divides 78297 without a remainder.

1, 3, 26099

Step-4: Factors of 78309

List of positive integer factors of 78309 that divides 78297 without a remainder.

1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 113, 231, 339, 693, 791, 1017, 1243, 2373, 3729, 7119, 8701, 11187, 26103

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78297 and 78309. The biggest common factor number is the GCF number.
So the greatest common factor 78297 and 78309 is 3.

Also check out the Least Common Multiple of 78297 and 78309