What is the Greatest Common Factor of 15581 and 15585?

Greatest common factor (GCF) of 15581 and 15585 is 1.

GCF(15581,15585) = 1

We will now calculate the prime factors of 15581 and 15585, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15581 and 15585.

How to find the GCF of 15581 and 15585?

We will first find the prime factorization of 15581 and 15585. After we will calculate the factors of 15581 and 15585 and find the biggest common factor number .

Step-1: Prime Factorization of 15581

Prime factors of 15581 are 15581. Prime factorization of 15581 in exponential form is:

15581 = 15581¹

Step-2: 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-3: Factors of 15581

List of positive integer factors of 15581 that divides 15581 without a remainder.

Step-4: Factors of 15585

List of positive integer factors of 15585 that divides 15581 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15581 and 15585. The biggest common factor number is the GCF number.
So the greatest common factor 15581 and 15585 is 1.

Also check out the Least Common Multiple of 15581 and 15585