What is the Greatest Common Factor of 66309 and 66315?

Greatest common factor (GCF) of 66309 and 66315 is 3.

GCF(66309,66315) = 3

We will now calculate the prime factors of 66309 and 66315, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66309 and 66315.

How to find the GCF of 66309 and 66315?

We will first find the prime factorization of 66309 and 66315. After we will calculate the factors of 66309 and 66315 and find the biggest common factor number .

Step-1: Prime Factorization of 66309

Prime factors of 66309 are 3, 23, 31. Prime factorization of 66309 in exponential form is:

66309 = 3¹ × 23¹ × 31²

Step-2: Prime Factorization of 66315

Prime factors of 66315 are 3, 5, 4421. Prime factorization of 66315 in exponential form is:

66315 = 3¹ × 5¹ × 4421¹

Step-3: Factors of 66309

List of positive integer factors of 66309 that divides 66309 without a remainder.

1, 3, 23, 31, 69, 93, 713, 961, 2139, 2883, 22103

Step-4: Factors of 66315

List of positive integer factors of 66315 that divides 66309 without a remainder.

1, 3, 5, 15, 4421, 13263, 22105

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66309 and 66315. The biggest common factor number is the GCF number.
So the greatest common factor 66309 and 66315 is 3.

Also check out the Least Common Multiple of 66309 and 66315