What is the Greatest Common Factor of 11565 and 11571?

Greatest common factor (GCF) of 11565 and 11571 is 3.

GCF(11565,11571) = 3

We will now calculate the prime factors of 11565 and 11571, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 11565 and 11571.

How to find the GCF of 11565 and 11571?

We will first find the prime factorization of 11565 and 11571. After we will calculate the factors of 11565 and 11571 and find the biggest common factor number .

Step-1: Prime Factorization of 11565

Prime factors of 11565 are 3, 5, 257. Prime factorization of 11565 in exponential form is:

11565 = 3² × 5¹ × 257¹

Step-2: Prime Factorization of 11571

Prime factors of 11571 are 3, 7, 19, 29. Prime factorization of 11571 in exponential form is:

11571 = 3¹ × 7¹ × 19¹ × 29¹

Step-3: Factors of 11565

List of positive integer factors of 11565 that divides 11565 without a remainder.

1, 3, 5, 9, 15, 45, 257, 771, 1285, 2313, 3855

Step-4: Factors of 11571

List of positive integer factors of 11571 that divides 11565 without a remainder.

1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1653, 3857

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 11565 and 11571. The biggest common factor number is the GCF number.
So the greatest common factor 11565 and 11571 is 3.

Also check out the Least Common Multiple of 11565 and 11571