What is the Greatest Common Factor of 72543 and 72558?

Greatest common factor (GCF) of 72543 and 72558 is 3.

GCF(72543,72558) = 3

We will now calculate the prime factors of 72543 and 72558, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72543 and 72558.

How to find the GCF of 72543 and 72558?

We will first find the prime factorization of 72543 and 72558. After we will calculate the factors of 72543 and 72558 and find the biggest common factor number .

Step-1: Prime Factorization of 72543

Prime factors of 72543 are 3, 24181. Prime factorization of 72543 in exponential form is:

72543 = 3¹ × 24181¹

Step-2: Prime Factorization of 72558

Prime factors of 72558 are 2, 3, 29, 139. Prime factorization of 72558 in exponential form is:

72558 = 2¹ × 3² × 29¹ × 139¹

Step-3: Factors of 72543

List of positive integer factors of 72543 that divides 72543 without a remainder.

1, 3, 24181

Step-4: Factors of 72558

List of positive integer factors of 72558 that divides 72543 without a remainder.

1, 2, 3, 6, 9, 18, 29, 58, 87, 139, 174, 261, 278, 417, 522, 834, 1251, 2502, 4031, 8062, 12093, 24186, 36279

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72543 and 72558. The biggest common factor number is the GCF number.
So the greatest common factor 72543 and 72558 is 3.

Also check out the Least Common Multiple of 72543 and 72558