What is the Greatest Common Factor of 558 and 573?

Greatest common factor (GCF) of 558 and 573 is 3.

GCF(558,573) = 3

We will now calculate the prime factors of 558 and 573, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 558 and 573.

How to find the GCF of 558 and 573?

We will first find the prime factorization of 558 and 573. After we will calculate the factors of 558 and 573 and find the biggest common factor number .

Step-1: Prime Factorization of 558

Prime factors of 558 are 2, 3, 31. Prime factorization of 558 in exponential form is:

558 = 2¹ × 3² × 31¹

Step-2: Prime Factorization of 573

Prime factors of 573 are 3, 191. Prime factorization of 573 in exponential form is:

573 = 3¹ × 191¹

Step-3: Factors of 558

List of positive integer factors of 558 that divides 558 without a remainder.

1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279

Step-4: Factors of 573

List of positive integer factors of 573 that divides 558 without a remainder.

1, 3, 191

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 558 and 573. The biggest common factor number is the GCF number.
So the greatest common factor 558 and 573 is 3.

Also check out the Least Common Multiple of 558 and 573