What is the Greatest Common Factor of 8565 and 8580?

Greatest common factor (GCF) of 8565 and 8580 is 15.

GCF(8565,8580) = 15

We will now calculate the prime factors of 8565 and 8580, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 8565 and 8580.

How to find the GCF of 8565 and 8580?

We will first find the prime factorization of 8565 and 8580. After we will calculate the factors of 8565 and 8580 and find the biggest common factor number .

Step-1: Prime Factorization of 8565

Prime factors of 8565 are 3, 5, 571. Prime factorization of 8565 in exponential form is:

8565 = 3¹ × 5¹ × 571¹

Step-2: Prime Factorization of 8580

Prime factors of 8580 are 2, 3, 5, 11, 13. Prime factorization of 8580 in exponential form is:

8580 = 2² × 3¹ × 5¹ × 11¹ × 13¹

Step-3: Factors of 8565

List of positive integer factors of 8565 that divides 8565 without a remainder.

1, 3, 5, 15, 571, 1713, 2855

Step-4: Factors of 8580

List of positive integer factors of 8580 that divides 8565 without a remainder.

1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 26, 30, 33, 39, 44, 52, 55, 60, 65, 66, 78, 110, 130, 132, 143, 156, 165, 195, 220, 260, 286, 330, 390, 429, 572, 660, 715, 780, 858, 1430, 1716, 2145, 2860, 4290

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 8565 and 8580. The biggest common factor number is the GCF number.
So the greatest common factor 8565 and 8580 is 15.

Also check out the Least Common Multiple of 8565 and 8580