What is the Greatest Common Factor of 16809 and 16818?

Greatest common factor (GCF) of 16809 and 16818 is 3.

GCF(16809,16818) = 3

We will now calculate the prime factors of 16809 and 16818, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 16809 and 16818.

How to find the GCF of 16809 and 16818?

We will first find the prime factorization of 16809 and 16818. After we will calculate the factors of 16809 and 16818 and find the biggest common factor number .

Step-1: Prime Factorization of 16809

Prime factors of 16809 are 3, 13, 431. Prime factorization of 16809 in exponential form is:

16809 = 3¹ × 13¹ × 431¹

Step-2: Prime Factorization of 16818

Prime factors of 16818 are 2, 3, 2803. Prime factorization of 16818 in exponential form is:

16818 = 2¹ × 3¹ × 2803¹

Step-3: Factors of 16809

List of positive integer factors of 16809 that divides 16809 without a remainder.

1, 3, 13, 39, 431, 1293, 5603

Step-4: Factors of 16818

List of positive integer factors of 16818 that divides 16809 without a remainder.

1, 2, 3, 6, 2803, 5606, 8409

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 16809 and 16818. The biggest common factor number is the GCF number.
So the greatest common factor 16809 and 16818 is 3.

Also check out the Least Common Multiple of 16809 and 16818