Greatest Common Factor of 9 and 261
GCF(9, 261) = 9, Greatest common factor of 9 and 261 is 9. Greatest Common Factor or Greatest Common Divisor of two numbers is the largest integer by which both the numbers can be divided. There are two different methods to calculate Greatest Common Factor of 9 and 261. Greatest Common Factor by prime factorization method and Greatest Common Factor by matching factors method.
Greatest Common Factor of 9 and 261 by prime factorization method
We will first find the prime factorization of 9 and 261.
Prime Factorization of 9 is 1, 3, 3 and Prime Factorization of 261 is 1, 3, 3, 29.
- Factorize\( (9) = \) \(1\times 3\times 3\)
- Factorize\( (261) = \) \(1\times 3\times 3\times 29\)
Now we need to find any which are common for each number (1, 3, 3) and multiply these numbers together.
\(GCF(9, 261) = 1\times 3\times 3 = 9\).
Greatest Common Factor of 9 and 261 by matching factors method
List of positive integers factors of 9 leaving a remainder zero is 1, 3, 9
List of positive integers factors of 261 leaving a remainder zero is 1, 3, 9, 29, 87, 261
As you can see, 9 is the greatest and common number that 9 and 261 divides into.
So the greatest common factor 9 and 261 is 9.
\(GCF(9, 261) = 9\).
If you want to learn more about greatest common divisor, take a look at the Wikipedia page.
