What is the Greatest Common Factor of 729 and 3249?

Greatest common factor (GCF) of 729 and 3249 is 9.

GCF(729,3249) = 9

We will now calculate the prime factors of 729 and 3249, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 729 and 3249.

How to find the GCF of 729 and 3249?

We will first find the prime factorization of 729 and 3249. After we will calculate the factors of 729 and 3249 and find the biggest common factor number .

Step-1: Prime Factorization of 729

Prime factors of 729 are 3. Prime factorization of 729 in exponential form is:

729 = 3⁶

Step-2: Prime Factorization of 3249

Prime factors of 3249 are 3, 19. Prime factorization of 3249 in exponential form is:

3249 = 3² × 19²

Step-3: Factors of 729

List of positive integer factors of 729 that divides 729 without a remainder.

1, 3, 9, 27, 81, 243

Step-4: Factors of 3249

List of positive integer factors of 3249 that divides 729 without a remainder.

1, 3, 9, 19, 57, 171, 361, 1083

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 729 and 3249. The biggest common factor number is the GCF number.
So the greatest common factor 729 and 3249 is 9.

Also check out the Least Common Multiple of 729 and 3249