What is the Greatest Common Factor of 28545 and 28555?

Greatest common factor (GCF) of 28545 and 28555 is 5.

GCF(28545,28555) = 5

We will now calculate the prime factors of 28545 and 28555, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28545 and 28555.

How to find the GCF of 28545 and 28555?

We will first find the prime factorization of 28545 and 28555. After we will calculate the factors of 28545 and 28555 and find the biggest common factor number .

Step-1: Prime Factorization of 28545

Prime factors of 28545 are 3, 5, 11, 173. Prime factorization of 28545 in exponential form is:

28545 = 3¹ × 5¹ × 11¹ × 173¹

Step-2: Prime Factorization of 28555

Prime factors of 28555 are 5, 5711. Prime factorization of 28555 in exponential form is:

28555 = 5¹ × 5711¹

Step-3: Factors of 28545

List of positive integer factors of 28545 that divides 28545 without a remainder.

1, 3, 5, 11, 15, 33, 55, 165, 173, 519, 865, 1903, 2595, 5709, 9515

Step-4: Factors of 28555

List of positive integer factors of 28555 that divides 28545 without a remainder.

1, 5, 5711

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28545 and 28555. The biggest common factor number is the GCF number.
So the greatest common factor 28545 and 28555 is 5.

Also check out the Least Common Multiple of 28545 and 28555