GCF of 63 and 56


The gcf of 63 and 56 is the largest positive integer that divides the numbers 63 and 56 without a remainder. Spelled out, it is the greatest common factor of 63 and 56. Here you can find the gcf of 63 and 56, along with a total of three methods for computing it. In addition, we have a calculator you should check out. Not only can it determine the gcf of 63 and 56, but also that of three or more integers including sixty-three and fifty-six for example. Keep reading to learn everything about the gcf (63,56) and the terms related to it.

What is the GCF of 63 and 56

If you just want to know what is the greatest common factor of 63 and 56, it is 7. Usually, this is written as

gcf(63,56) = 7

The gcf of 63 and 56 can be obtained like this:

  • The factors of 63 are 63, 21, 9, 7, 3, 1.
  • The factors of 56 are 56, 28, 14, 8, 7, 4, 2, 1.
  • The common factors of 63 and 56 are 7, 1, intersecting the two sets above.
  • In the intersection factors of 63 ∩ factors of 56 the greatest element is 7.
  • Therefore, the greatest common factor of 63 and 56 is 7.

Taking the above into account you also know how to find all the common factors of 63 and 56, not just the greatest. In the next section we show you how to calculate the gcf of sixty-three and fifty-six by means of two more methods.

How to find the GCF of 63 and 56

The greatest common factor of 63 and 56 can be computed by using the least common multiple aka lcm of 63 and 56. This is the easiest approach:

gcf (63,56) = $\frac{63 \times 56}{lcm(63,56)} = \frac{3528}{504}$ = 7

Alternatively, the gcf of 63 and 56 can be found using the prime factorization of 63 and 56:

  • The prime factorization of 63 is: 3 x 3 x 7
  • The prime factorization of 56 is: 2 x 2 x 2 x 7
  • The prime factors and multiplicities 63 and 56 have in common are: 7
  • 7 is the gcf of 63 and 56
  • gcf(63,56) = 7

In any case, the easiest way to compute the gcf of two numbers like 63 and 56 is by using our calculator below. Note that it can also compute the gcf of more than two numbers, separated by a comma. For example, enter 63,56. The calculation is conducted automatically.

The gcf is...
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Use of GCF of 63 and 56

What is the greatest common factor of 63 and 56 used for? Answer: It is helpful for reducing fractions like 63 / 56. Just divide the nominator as well as the denominator by the gcf (63,56) to reduce the fraction to lowest terms.

$\frac{63}{56} = \frac{\frac{63}{7}}{\frac{56}{7}} = \frac{9}{8}$.

Properties of GCF of 63 and 56

The most important properties of the gcf(63,56) are:

  • Commutative property: gcf(63,56) = gcf(56,63)
  • Associative property: gcf(63,56,n) = gcf(gcf(56,63),n) $\hspace{10px}n\hspace{3px}\epsilon\hspace{3px}\mathbb{Z}$

The associativity is particularly useful to get the gcf of three or more numbers; our calculator makes use of it.

To sum up, the gcf of 63 and 56 is 7. In common notation: gcf (63,56) = 7.

If you have been searching for gcf 63 and 56 or gcf 63 56 then you have come to the correct page, too. The same is the true if you typed gcf for 63 and 56 in your favorite search engine.

Note that you can find the greatest common factor of many integer pairs including sixty-three / fifty-six by using the search form in the sidebar of this page.

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