What is the Greatest Common Factor of 28755 and 28761?

Greatest common factor (GCF) of 28755 and 28761 is 3.

GCF(28755,28761) = 3

We will now calculate the prime factors of 28755 and 28761, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28755 and 28761.

How to find the GCF of 28755 and 28761?

We will first find the prime factorization of 28755 and 28761. After we will calculate the factors of 28755 and 28761 and find the biggest common factor number .

Step-1: Prime Factorization of 28755

Prime factors of 28755 are 3, 5, 71. Prime factorization of 28755 in exponential form is:

28755 = 3⁴ × 5¹ × 71¹

Step-2: Prime Factorization of 28761

Prime factors of 28761 are 3, 9587. Prime factorization of 28761 in exponential form is:

28761 = 3¹ × 9587¹

Step-3: Factors of 28755

List of positive integer factors of 28755 that divides 28755 without a remainder.

1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 355, 405, 639, 1065, 1917, 3195, 5751, 9585

Step-4: Factors of 28761

List of positive integer factors of 28761 that divides 28755 without a remainder.

1, 3, 9587

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28755 and 28761. The biggest common factor number is the GCF number.
So the greatest common factor 28755 and 28761 is 3.

Also check out the Least Common Multiple of 28755 and 28761