What is the Greatest Common Factor of 15381 and 15397?

Greatest common factor (GCF) of 15381 and 15397 is 1.

GCF(15381,15397) = 1

We will now calculate the prime factors of 15381 and 15397, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15381 and 15397.

How to find the GCF of 15381 and 15397?

We will first find the prime factorization of 15381 and 15397. After we will calculate the factors of 15381 and 15397 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 15397

Prime factors of 15397 are 89, 173. Prime factorization of 15397 in exponential form is:

15397 = 89¹ × 173¹

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 15397

List of positive integer factors of 15397 that divides 15381 without a remainder.

1, 89, 173

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15381 and 15397. The biggest common factor number is the GCF number.
So the greatest common factor 15381 and 15397 is 1.

Also check out the Least Common Multiple of 15381 and 15397