Greatest Common Factor of 1 and 1891

GCF(1, 1891) = 1, Greatest common factor of 1 and 1891 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 1 and 1891. Greatest Common Factor by prime factorization method and Greatest Common Factor by matching factors method.

Greatest Common Factor of 1 and 1891 by prime factorization method

We will first find the prime factorization of 1 and 1891.
Prime Factorization of 1 is 1, 1 and Prime Factorization of 1891 is 1, 31, 61.

  • Factorize\( (1) = \) \(1\times 1\)
  • Factorize\( (1891) = \) \(1\times 31\times 61\)
Now we need to find any which are common for each number (1, 1) and multiply these numbers together.
\(GCF(1, 1891) = 1\times 1 = 1\).

Greatest Common Factor of 1 and 1891 by matching factors method

List of positive integers factors of 1 leaving a remainder zero is 1
List of positive integers factors of 1891 leaving a remainder zero is 1, 31, 61, 1891
As you can see, 1 is the greatest and common number that 1 and 1891 divides into.
So the greatest common factor 1 and 1891 is 1.
\(GCF(1, 1891) = 1\).

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