What is the Greatest Common Factor of 28685 and 28689?

Greatest common factor (GCF) of 28685 and 28689 is 1.

GCF(28685,28689) = 1

We will now calculate the prime factors of 28685 and 28689, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28685 and 28689.

How to find the GCF of 28685 and 28689?

We will first find the prime factorization of 28685 and 28689. After we will calculate the factors of 28685 and 28689 and find the biggest common factor number .

Step-1: Prime Factorization of 28685

Prime factors of 28685 are 5, 5737. Prime factorization of 28685 in exponential form is:

28685 = 5¹ × 5737¹

Step-2: Prime Factorization of 28689

Prime factors of 28689 are 3, 73, 131. Prime factorization of 28689 in exponential form is:

28689 = 3¹ × 73¹ × 131¹

Step-3: Factors of 28685

List of positive integer factors of 28685 that divides 28685 without a remainder.

1, 5, 5737

Step-4: Factors of 28689

List of positive integer factors of 28689 that divides 28685 without a remainder.

1, 3, 73, 131, 219, 393, 9563

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28685 and 28689. The biggest common factor number is the GCF number.
So the greatest common factor 28685 and 28689 is 1.

Also check out the Least Common Multiple of 28685 and 28689