What is the Greatest Common Factor of 15381 and 15399?

Greatest common factor (GCF) of 15381 and 15399 is 9.

GCF(15381,15399) = 9

We will now calculate the prime factors of 15381 and 15399, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15381 and 15399.

How to find the GCF of 15381 and 15399?

We will first find the prime factorization of 15381 and 15399. After we will calculate the factors of 15381 and 15399 and find the biggest common factor number .

Step-1: Prime Factorization of 15381

Prime factors of 15381 are 3, 1709. Prime factorization of 15381 in exponential form is:

15381 = 3² × 1709¹

Step-2: Prime Factorization of 15399

Prime factors of 15399 are 3, 29, 59. Prime factorization of 15399 in exponential form is:

15399 = 3² × 29¹ × 59¹

Step-3: Factors of 15381

List of positive integer factors of 15381 that divides 15381 without a remainder.

1, 3, 9, 1709, 5127

Step-4: Factors of 15399

List of positive integer factors of 15399 that divides 15381 without a remainder.

1, 3, 9, 29, 59, 87, 177, 261, 531, 1711, 5133

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15381 and 15399. The biggest common factor number is the GCF number.
So the greatest common factor 15381 and 15399 is 9.

Also check out the Least Common Multiple of 15381 and 15399