What is the Greatest Common Factor of 28143 and 28149?

Greatest common factor (GCF) of 28143 and 28149 is 3.

GCF(28143,28149) = 3

We will now calculate the prime factors of 28143 and 28149, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28143 and 28149.

How to find the GCF of 28143 and 28149?

We will first find the prime factorization of 28143 and 28149. After we will calculate the factors of 28143 and 28149 and find the biggest common factor number .

Step-1: Prime Factorization of 28143

Prime factors of 28143 are 3, 53, 59. Prime factorization of 28143 in exponential form is:

28143 = 3² × 53¹ × 59¹

Step-2: Prime Factorization of 28149

Prime factors of 28149 are 3, 11, 853. Prime factorization of 28149 in exponential form is:

28149 = 3¹ × 11¹ × 853¹

Step-3: Factors of 28143

List of positive integer factors of 28143 that divides 28143 without a remainder.

1, 3, 9, 53, 59, 159, 177, 477, 531, 3127, 9381

Step-4: Factors of 28149

List of positive integer factors of 28149 that divides 28143 without a remainder.

1, 3, 11, 33, 853, 2559, 9383

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28143 and 28149. The biggest common factor number is the GCF number.
So the greatest common factor 28143 and 28149 is 3.

Also check out the Least Common Multiple of 28143 and 28149