Greatest Common Factor of 168 and 720
GCF(168, 720) = 24, Greatest common factor of 168 and 720 is 24. 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 168 and 720. Greatest Common Factor by prime factorization method and Greatest Common Factor by matching factors method.
Greatest Common Factor of 168 and 720 by prime factorization method
We will first find the prime factorization of 168 and 720.
Prime Factorization of 168 is 1, 2, 2, 2, 3, 7 and Prime Factorization of 720 is 1, 2, 2, 2, 2, 3, 3, 5.
- Factorize\( (168) = \) \(1\times 2\times 2\times 2\times 3\times 7\)
- Factorize\( (720) = \) \(1\times 2\times 2\times 2\times 2\times 3\times 3\times 5\)
Now we need to find any which are common for each number (1, 2, 2, 2, 3) and multiply these numbers together.
\(GCF(168, 720) = 1\times 2\times 2\times 2\times 3 = 24\).
Greatest Common Factor of 168 and 720 by matching factors method
List of positive integers factors of 168 leaving a remainder zero is 1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168
List of positive integers factors of 720 leaving a remainder zero is 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
As you can see, 24 is the greatest and common number that 168 and 720 divides into.
So the greatest common factor 168 and 720 is 24.
\(GCF(168, 720) = 24\).
If you want to learn more about greatest common divisor, take a look at the Wikipedia page.
