Greatest Common Factor of 248 and 403

GCF(248, 403) = 31, Greatest common factor of 248 and 403 is 31. 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 248 and 403. Greatest Common Factor by prime factorization method and Greatest Common Factor by matching factors method.

Greatest Common Factor of 248 and 403 by prime factorization method

We will first find the prime factorization of 248 and 403.
Prime Factorization of 248 is 1, 2, 2, 2, 31 and Prime Factorization of 403 is 1, 13, 31.

  • Factorize\( (248) = \) \(1\times 2\times 2\times 2\times 31\)
  • Factorize\( (403) = \) \(1\times 13\times 31\)
Now we need to find any which are common for each number (1, 31) and multiply these numbers together.
\(GCF(248, 403) = 1\times 31 = 31\).

Greatest Common Factor of 248 and 403 by matching factors method

List of positive integers factors of 248 leaving a remainder zero is 1, 2, 4, 8, 31, 62, 124, 248
List of positive integers factors of 403 leaving a remainder zero is 1, 13, 31, 403
As you can see, 31 is the greatest and common number that 248 and 403 divides into.
So the greatest common factor 248 and 403 is 31.
\(GCF(248, 403) = 31\).

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