What is the Greatest Common Factor of 40509 and 40518?

Greatest common factor (GCF) of 40509 and 40518 is 9.

GCF(40509,40518) = 9

We will now calculate the prime factors of 40509 and 40518, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 40509 and 40518.

How to find the GCF of 40509 and 40518?

We will first find the prime factorization of 40509 and 40518. After we will calculate the factors of 40509 and 40518 and find the biggest common factor number .

Step-1: Prime Factorization of 40509

Prime factors of 40509 are 3, 7, 643. Prime factorization of 40509 in exponential form is:

40509 = 3² × 7¹ × 643¹

Step-2: Prime Factorization of 40518

Prime factors of 40518 are 2, 3, 2251. Prime factorization of 40518 in exponential form is:

40518 = 2¹ × 3² × 2251¹

Step-3: Factors of 40509

List of positive integer factors of 40509 that divides 40509 without a remainder.

1, 3, 7, 9, 21, 63, 643, 1929, 4501, 5787, 13503

Step-4: Factors of 40518

List of positive integer factors of 40518 that divides 40509 without a remainder.

1, 2, 3, 6, 9, 18, 2251, 4502, 6753, 13506, 20259

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 40509 and 40518. The biggest common factor number is the GCF number.
So the greatest common factor 40509 and 40518 is 9.

Also check out the Least Common Multiple of 40509 and 40518