Greatest Common Factor of 5 and 656

GCF(5, 656) = 1, Greatest common factor of 5 and 656 is 1. 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 5 and 656. Greatest Common Factor by prime factorization method and Greatest Common Factor by matching factors method.

Greatest Common Factor of 5 and 656 by prime factorization method

We will first find the prime factorization of 5 and 656.
Prime Factorization of 5 is 1, 5 and Prime Factorization of 656 is 1, 2, 2, 2, 2, 41.

  • Factorize\( (5) = \) \(1\times 5\)
  • Factorize\( (656) = \) \(1\times 2\times 2\times 2\times 2\times 41\)
Now we need to find any which are common for each number (1, 1) and multiply these numbers together.
\(GCF(5, 656) = 1\times 1 = 1\).

Greatest Common Factor of 5 and 656 by matching factors method

List of positive integers factors of 5 leaving a remainder zero is 1, 5
List of positive integers factors of 656 leaving a remainder zero is 1, 2, 4, 8, 16, 41, 82, 164, 328, 656
As you can see, 1 is the greatest and common number that 5 and 656 divides into.
So the greatest common factor 5 and 656 is 1.
\(GCF(5, 656) = 1\).

If you want to learn more about greatest common divisor, take a look at the Wikipedia page.
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