What is the Greatest Common Factor of 556 and 564?

Greatest common factor (GCF) of 556 and 564 is 4.

GCF(556,564) = 4

We will now calculate the prime factors of 556 and 564, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 556 and 564.

How to find the GCF of 556 and 564?

We will first find the prime factorization of 556 and 564. After we will calculate the factors of 556 and 564 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 564

Prime factors of 564 are 2, 3, 47. Prime factorization of 564 in exponential form is:

564 = 2² × 3¹ × 47¹

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 564

List of positive integer factors of 564 that divides 556 without a remainder.

1, 2, 3, 4, 6, 12, 47, 94, 141, 188, 282

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 556 and 564. The biggest common factor number is the GCF number.
So the greatest common factor 556 and 564 is 4.

Also check out the Least Common Multiple of 556 and 564