Greatest Common Factor of 17 and 171

GCF(17, 171) = 1, Greatest common factor of 17 and 171 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 17 and 171. Greatest Common Factor by prime factorization method and Greatest Common Factor by matching factors method.

Greatest Common Factor of 17 and 171 by prime factorization method

We will first find the prime factorization of 17 and 171.
Prime Factorization of 17 is 1, 17 and Prime Factorization of 171 is 1, 3, 3, 19.

  • Factorize\( (17) = \) \(1\times 17\)
  • Factorize\( (171) = \) \(1\times 3\times 3\times 19\)
Now we need to find any which are common for each number (1, 1) and multiply these numbers together.
\(GCF(17, 171) = 1\times 1 = 1\).

Greatest Common Factor of 17 and 171 by matching factors method

List of positive integers factors of 17 leaving a remainder zero is 1, 17
List of positive integers factors of 171 leaving a remainder zero is 1, 3, 9, 19, 57, 171
As you can see, 1 is the greatest and common number that 17 and 171 divides into.
So the greatest common factor 17 and 171 is 1.
\(GCF(17, 171) = 1\).

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