What is the Greatest Common Factor of 28143 and 28157?

Greatest common factor (GCF) of 28143 and 28157 is 1.

GCF(28143,28157) = 1

We will now calculate the prime factors of 28143 and 28157, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28143 and 28157.

How to find the GCF of 28143 and 28157?

We will first find the prime factorization of 28143 and 28157. After we will calculate the factors of 28143 and 28157 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 28157

Prime factors of 28157 are 37, 761. Prime factorization of 28157 in exponential form is:

28157 = 37¹ × 761¹

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 28157

List of positive integer factors of 28157 that divides 28143 without a remainder.

1, 37, 761

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28143 and 28157. The biggest common factor number is the GCF number.
So the greatest common factor 28143 and 28157 is 1.

Also check out the Least Common Multiple of 28143 and 28157