What is the Greatest Common Factor of 556 and 570?

Greatest common factor (GCF) of 556 and 570 is 2.

GCF(556,570) = 2

We will now calculate the prime factors of 556 and 570, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 556 and 570.

How to find the GCF of 556 and 570?

We will first find the prime factorization of 556 and 570. After we will calculate the factors of 556 and 570 and find the biggest common factor number .

Step-1: Prime Factorization of 556

Prime factors of 556 are 2, 139. Prime factorization of 556 in exponential form is:

556 = 2² × 139¹

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 556

List of positive integer factors of 556 that divides 556 without a remainder.

1, 2, 4, 139, 278

Step-4: Factors of 570

List of positive integer factors of 570 that divides 556 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 556 and 570. The biggest common factor number is the GCF number.
So the greatest common factor 556 and 570 is 2.

Also check out the Least Common Multiple of 556 and 570