What is the Greatest Common Factor of 555 and 570?

Greatest common factor (GCF) of 555 and 570 is 15.

GCF(555,570) = 15

We will now calculate the prime factors of 555 and 570, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 555 and 570.

How to find the GCF of 555 and 570?

We will first find the prime factorization of 555 and 570. After we will calculate the factors of 555 and 570 and find the biggest common factor number .

Step-1: Prime Factorization of 555

Prime factors of 555 are 3, 5, 37. Prime factorization of 555 in exponential form is:

555 = 3¹ × 5¹ × 37¹

Step-2: Prime Factorization of 570

Prime factors of 570 are 2, 3, 5, 19. Prime factorization of 570 in exponential form is:

570 = 2¹ × 3¹ × 5¹ × 19¹

Step-3: Factors of 555

List of positive integer factors of 555 that divides 555 without a remainder.

1, 3, 5, 15, 37, 111, 185

Step-4: Factors of 570

List of positive integer factors of 570 that divides 555 without a remainder.

1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 95, 114, 190, 285

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 555 and 570. The biggest common factor number is the GCF number.
So the greatest common factor 555 and 570 is 15.

Also check out the Least Common Multiple of 555 and 570