What is the Greatest Common Factor of 39309 and 39315?

Greatest common factor (GCF) of 39309 and 39315 is 3.

GCF(39309,39315) = 3

We will now calculate the prime factors of 39309 and 39315, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39309 and 39315.

How to find the GCF of 39309 and 39315?

We will first find the prime factorization of 39309 and 39315. After we will calculate the factors of 39309 and 39315 and find the biggest common factor number .

Step-1: Prime Factorization of 39309

Prime factors of 39309 are 3, 13103. Prime factorization of 39309 in exponential form is:

39309 = 3¹ × 13103¹

Step-2: Prime Factorization of 39315

Prime factors of 39315 are 3, 5, 2621. Prime factorization of 39315 in exponential form is:

39315 = 3¹ × 5¹ × 2621¹

Step-3: Factors of 39309

List of positive integer factors of 39309 that divides 39309 without a remainder.

1, 3, 13103

Step-4: Factors of 39315

List of positive integer factors of 39315 that divides 39309 without a remainder.

1, 3, 5, 15, 2621, 7863, 13105

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39309 and 39315. The biggest common factor number is the GCF number.
So the greatest common factor 39309 and 39315 is 3.

Also check out the Least Common Multiple of 39309 and 39315