Greatest Common Factor of 9 and 147
GCF(9, 147) = 3, Greatest common factor of 9 and 147 is 3. 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 147. Greatest Common Factor by prime factorization method and Greatest Common Factor by matching factors method.
Greatest Common Factor of 9 and 147 by prime factorization method
We will first find the prime factorization of 9 and 147.
Prime Factorization of 9 is 1, 3, 3 and Prime Factorization of 147 is 1, 3, 7, 7.
- Factorize\( (9) = \) \(1\times 3\times 3\)
- Factorize\( (147) = \) \(1\times 3\times 7\times 7\)
Now we need to find any which are common for each number (1, 3) and multiply these numbers together.
\(GCF(9, 147) = 1\times 3 = 3\).
Greatest Common Factor of 9 and 147 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 147 leaving a remainder zero is 1, 3, 7, 21, 49, 147
As you can see, 3 is the greatest and common number that 9 and 147 divides into.
So the greatest common factor 9 and 147 is 3.
\(GCF(9, 147) = 3\).
If you want to learn more about greatest common divisor, take a look at the Wikipedia page.
