What is the Greatest Common Factor of 18003 and 18009?

Greatest common factor (GCF) of 18003 and 18009 is 3.

GCF(18003,18009) = 3

We will now calculate the prime factors of 18003 and 18009, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18003 and 18009.

How to find the GCF of 18003 and 18009?

We will first find the prime factorization of 18003 and 18009. After we will calculate the factors of 18003 and 18009 and find the biggest common factor number .

Step-1: Prime Factorization of 18003

Prime factors of 18003 are 3, 17, 353. Prime factorization of 18003 in exponential form is:

18003 = 3¹ × 17¹ × 353¹

Step-2: Prime Factorization of 18009

Prime factors of 18009 are 3, 23, 29. Prime factorization of 18009 in exponential form is:

18009 = 3³ × 23¹ × 29¹

Step-3: Factors of 18003

List of positive integer factors of 18003 that divides 18003 without a remainder.

1, 3, 17, 51, 353, 1059, 6001

Step-4: Factors of 18009

List of positive integer factors of 18009 that divides 18003 without a remainder.

1, 3, 9, 23, 27, 29, 69, 87, 207, 261, 621, 667, 783, 2001, 6003

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18003 and 18009. The biggest common factor number is the GCF number.
So the greatest common factor 18003 and 18009 is 3.

Also check out the Least Common Multiple of 18003 and 18009