What is the Greatest Common Factor of 28239 and 28257?

Greatest common factor (GCF) of 28239 and 28257 is 3.

GCF(28239,28257) = 3

We will now calculate the prime factors of 28239 and 28257, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28239 and 28257.

How to find the GCF of 28239 and 28257?

We will first find the prime factorization of 28239 and 28257. After we will calculate the factors of 28239 and 28257 and find the biggest common factor number .

Step-1: Prime Factorization of 28239

Prime factors of 28239 are 3, 9413. Prime factorization of 28239 in exponential form is:

28239 = 3¹ × 9413¹

Step-2: Prime Factorization of 28257

Prime factors of 28257 are 3, 9419. Prime factorization of 28257 in exponential form is:

28257 = 3¹ × 9419¹

Step-3: Factors of 28239

List of positive integer factors of 28239 that divides 28239 without a remainder.

1, 3, 9413

Step-4: Factors of 28257

List of positive integer factors of 28257 that divides 28239 without a remainder.

1, 3, 9419

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28239 and 28257. The biggest common factor number is the GCF number.
So the greatest common factor 28239 and 28257 is 3.

Also check out the Least Common Multiple of 28239 and 28257