What is the Greatest Common Factor of 28173 and 28191?

Greatest common factor (GCF) of 28173 and 28191 is 3.

GCF(28173,28191) = 3

We will now calculate the prime factors of 28173 and 28191, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28173 and 28191.

How to find the GCF of 28173 and 28191?

We will first find the prime factorization of 28173 and 28191. After we will calculate the factors of 28173 and 28191 and find the biggest common factor number .

Step-1: Prime Factorization of 28173

Prime factors of 28173 are 3, 9391. Prime factorization of 28173 in exponential form is:

28173 = 3¹ × 9391¹

Step-2: Prime Factorization of 28191

Prime factors of 28191 are 3, 9397. Prime factorization of 28191 in exponential form is:

28191 = 3¹ × 9397¹

Step-3: Factors of 28173

List of positive integer factors of 28173 that divides 28173 without a remainder.

1, 3, 9391

Step-4: Factors of 28191

List of positive integer factors of 28191 that divides 28173 without a remainder.

1, 3, 9397

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28173 and 28191. The biggest common factor number is the GCF number.
So the greatest common factor 28173 and 28191 is 3.

Also check out the Least Common Multiple of 28173 and 28191