GCF of 70 and 98


The gcf of 70 and 98 is the largest positive integer that divides the numbers 70 and 98 without a remainder. Spelled out, it is the greatest common factor of 70 and 98. Here you can find the gcf of 70 and 98, 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 70 and 98, but also that of three or more integers including seventy and ninety-eight for example. Keep reading to learn everything about the gcf (70,98) and the terms related to it.

What is the GCF of 70 and 98

If you just want to know what is the greatest common factor of 70 and 98, it is 14. Usually, this is written as

gcf(70,98) = 14

The gcf of 70 and 98 can be obtained like this:

  • The factors of 70 are 70, 35, 14, 10, 7, 5, 2, 1.
  • The factors of 98 are 98, 49, 14, 7, 2, 1.
  • The common factors of 70 and 98 are 14, 7, 2, 1, intersecting the two sets above.
  • In the intersection factors of 70 ∩ factors of 98 the greatest element is 14.
  • Therefore, the greatest common factor of 70 and 98 is 14.

Taking the above into account you also know how to find all the common factors of 70 and 98, not just the greatest. In the next section we show you how to calculate the gcf of seventy and ninety-eight by means of two more methods.

How to find the GCF of 70 and 98

The greatest common factor of 70 and 98 can be computed by using the least common multiple aka lcm of 70 and 98. This is the easiest approach:

gcf (70,98) = $\frac{70 \times 98}{lcm(70,98)} = \frac{6860}{490}$ = 14

Alternatively, the gcf of 70 and 98 can be found using the prime factorization of 70 and 98:

  • The prime factorization of 70 is: 2 x 5 x 7
  • The prime factorization of 98 is: 2 x 7 x 7
  • The prime factors and multiplicities 70 and 98 have in common are: 2 x 7
  • 2 x 7 is the gcf of 70 and 98
  • gcf(70,98) = 14

In any case, the easiest way to compute the gcf of two numbers like 70 and 98 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 70,98. The calculation is conducted automatically.

The gcf is...
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Use of GCF of 70 and 98

What is the greatest common factor of 70 and 98 used for? Answer: It is helpful for reducing fractions like 70 / 98. Just divide the nominator as well as the denominator by the gcf (70,98) to reduce the fraction to lowest terms.

$\frac{70}{98} = \frac{\frac{70}{14}}{\frac{98}{14}} = \frac{5}{7}$.

Properties of GCF of 70 and 98

The most important properties of the gcf(70,98) are:

  • Commutative property: gcf(70,98) = gcf(98,70)
  • Associative property: gcf(70,98,n) = gcf(gcf(98,70),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 70 and 98 is 14. In common notation: gcf (70,98) = 14.

If you have been searching for gcf 70 and 98 or gcf 70 98 then you have come to the correct page, too. The same is the true if you typed gcf for 70 and 98 in your favorite search engine.

Note that you can find the greatest common factor of many integer pairs including seventy / ninety-eight by using the search form in the sidebar of this page.

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