What is the Greatest Common Factor of 28158 and 28171?

Greatest common factor (GCF) of 28158 and 28171 is 13.

GCF(28158,28171) = 13

We will now calculate the prime factors of 28158 and 28171, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28158 and 28171.

How to find the GCF of 28158 and 28171?

We will first find the prime factorization of 28158 and 28171. After we will calculate the factors of 28158 and 28171 and find the biggest common factor number .

Step-1: Prime Factorization of 28158

Prime factors of 28158 are 2, 3, 13, 19. Prime factorization of 28158 in exponential form is:

28158 = 2¹ × 3¹ × 13¹ × 19²

Step-2: Prime Factorization of 28171

Prime factors of 28171 are 11, 13, 197. Prime factorization of 28171 in exponential form is:

28171 = 11¹ × 13¹ × 197¹

Step-3: Factors of 28158

List of positive integer factors of 28158 that divides 28158 without a remainder.

1, 2, 3, 6, 13, 19, 26, 38, 39, 57, 78, 114, 247, 361, 494, 722, 741, 1083, 1482, 2166, 4693, 9386, 14079

Step-4: Factors of 28171

List of positive integer factors of 28171 that divides 28158 without a remainder.

1, 11, 13, 143, 197, 2167, 2561

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28158 and 28171. The biggest common factor number is the GCF number.
So the greatest common factor 28158 and 28171 is 13.

Also check out the Least Common Multiple of 28158 and 28171