What is the Greatest Common Factor of 15243 and 15258?

Greatest common factor (GCF) of 15243 and 15258 is 3.

GCF(15243,15258) = 3

We will now calculate the prime factors of 15243 and 15258, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15243 and 15258.

How to find the GCF of 15243 and 15258?

We will first find the prime factorization of 15243 and 15258. After we will calculate the factors of 15243 and 15258 and find the biggest common factor number .

Step-1: Prime Factorization of 15243

Prime factors of 15243 are 3, 5081. Prime factorization of 15243 in exponential form is:

15243 = 3¹ × 5081¹

Step-2: Prime Factorization of 15258

Prime factors of 15258 are 2, 3, 2543. Prime factorization of 15258 in exponential form is:

15258 = 2¹ × 3¹ × 2543¹

Step-3: Factors of 15243

List of positive integer factors of 15243 that divides 15243 without a remainder.

1, 3, 5081

Step-4: Factors of 15258

List of positive integer factors of 15258 that divides 15243 without a remainder.

1, 2, 3, 6, 2543, 5086, 7629

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15243 and 15258. The biggest common factor number is the GCF number.
So the greatest common factor 15243 and 15258 is 3.

Also check out the Least Common Multiple of 15243 and 15258