What is the Greatest Common Factor of 18903 and 18909?

Greatest common factor (GCF) of 18903 and 18909 is 3.

GCF(18903,18909) = 3

We will now calculate the prime factors of 18903 and 18909, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18903 and 18909.

How to find the GCF of 18903 and 18909?

We will first find the prime factorization of 18903 and 18909. After we will calculate the factors of 18903 and 18909 and find the biggest common factor number .

Step-1: Prime Factorization of 18903

Prime factors of 18903 are 3, 6301. Prime factorization of 18903 in exponential form is:

18903 = 3¹ × 6301¹

Step-2: Prime Factorization of 18909

Prime factors of 18909 are 3, 11, 191. Prime factorization of 18909 in exponential form is:

18909 = 3² × 11¹ × 191¹

Step-3: Factors of 18903

List of positive integer factors of 18903 that divides 18903 without a remainder.

1, 3, 6301

Step-4: Factors of 18909

List of positive integer factors of 18909 that divides 18903 without a remainder.

1, 3, 9, 11, 33, 99, 191, 573, 1719, 2101, 6303

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18903 and 18909. The biggest common factor number is the GCF number.
So the greatest common factor 18903 and 18909 is 3.

Also check out the Least Common Multiple of 18903 and 18909