What is the Greatest Common Factor of 555 and 560?

Greatest common factor (GCF) of 555 and 560 is 5.

GCF(555,560) = 5

We will now calculate the prime factors of 555 and 560, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 555 and 560.

How to find the GCF of 555 and 560?

We will first find the prime factorization of 555 and 560. After we will calculate the factors of 555 and 560 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 560

Prime factors of 560 are 2, 5, 7. Prime factorization of 560 in exponential form is:

560 = 2⁴ × 5¹ × 7¹

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 560

List of positive integer factors of 560 that divides 555 without a remainder.

1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 555 and 560. The biggest common factor number is the GCF number.
So the greatest common factor 555 and 560 is 5.

Also check out the Least Common Multiple of 555 and 560