Greatest Common Factor of 928 and 1020

GCF(928, 1020) = 4, Greatest common factor of 928 and 1020 is 4. 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 928 and 1020. Greatest Common Factor by prime factorization method and Greatest Common Factor by matching factors method.

Greatest Common Factor of 928 and 1020 by prime factorization method

We will first find the prime factorization of 928 and 1020.
Prime Factorization of 928 is 1, 2, 2, 2, 2, 2, 29 and Prime Factorization of 1020 is 1, 2, 2, 3, 5, 17.

  • Factorize\( (928) = \) \(1\times 2\times 2\times 2\times 2\times 2\times 29\)
  • Factorize\( (1020) = \) \(1\times 2\times 2\times 3\times 5\times 17\)
Now we need to find any which are common for each number (1, 2, 2) and multiply these numbers together.
\(GCF(928, 1020) = 1\times 2\times 2 = 4\).

Greatest Common Factor of 928 and 1020 by matching factors method

List of positive integers factors of 928 leaving a remainder zero is 1, 2, 4, 8, 16, 29, 32, 58, 116, 232, 464, 928
List of positive integers factors of 1020 leaving a remainder zero is 1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020
As you can see, 4 is the greatest and common number that 928 and 1020 divides into.
So the greatest common factor 928 and 1020 is 4.
\(GCF(928, 1020) = 4\).

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