What is the Greatest Common Factor of 18561 and 18573?

Greatest common factor (GCF) of 18561 and 18573 is 3.

GCF(18561,18573) = 3

We will now calculate the prime factors of 18561 and 18573, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18561 and 18573.

How to find the GCF of 18561 and 18573?

We will first find the prime factorization of 18561 and 18573. After we will calculate the factors of 18561 and 18573 and find the biggest common factor number .

Step-1: Prime Factorization of 18561

Prime factors of 18561 are 3, 23, 269. Prime factorization of 18561 in exponential form is:

18561 = 3¹ × 23¹ × 269¹

Step-2: Prime Factorization of 18573

Prime factors of 18573 are 3, 41, 151. Prime factorization of 18573 in exponential form is:

18573 = 3¹ × 41¹ × 151¹

Step-3: Factors of 18561

List of positive integer factors of 18561 that divides 18561 without a remainder.

1, 3, 23, 69, 269, 807, 6187

Step-4: Factors of 18573

List of positive integer factors of 18573 that divides 18561 without a remainder.

1, 3, 41, 123, 151, 453, 6191

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18561 and 18573. The biggest common factor number is the GCF number.
So the greatest common factor 18561 and 18573 is 3.

Also check out the Least Common Multiple of 18561 and 18573