What is the Greatest Common Factor of 15585 and 15591?

Greatest common factor (GCF) of 15585 and 15591 is 3.

GCF(15585,15591) = 3

We will now calculate the prime factors of 15585 and 15591, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15585 and 15591.

How to find the GCF of 15585 and 15591?

We will first find the prime factorization of 15585 and 15591. After we will calculate the factors of 15585 and 15591 and find the biggest common factor number .

Step-1: Prime Factorization of 15585

Prime factors of 15585 are 3, 5, 1039. Prime factorization of 15585 in exponential form is:

15585 = 3¹ × 5¹ × 1039¹

Step-2: Prime Factorization of 15591

Prime factors of 15591 are 3, 5197. Prime factorization of 15591 in exponential form is:

15591 = 3¹ × 5197¹

Step-3: Factors of 15585

List of positive integer factors of 15585 that divides 15585 without a remainder.

1, 3, 5, 15, 1039, 3117, 5195

Step-4: Factors of 15591

List of positive integer factors of 15591 that divides 15585 without a remainder.

1, 3, 5197

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15585 and 15591. The biggest common factor number is the GCF number.
So the greatest common factor 15585 and 15591 is 3.

Also check out the Least Common Multiple of 15585 and 15591