The common factors of 18 and 27 are 1, 3 and 9. Given the list of common factors for each number, the GCF is the largest number common to each list. The whole number factors are numbers that divide evenly into the number with zero remainder. GCF by factoring, list out all of the factors of each number or find them with aįactors Calculator. The most efficient method you use depends on how many numbers you have, how large they are and what you will do with the result. There are several ways to find the greatest common factor of numbers.
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How to Find the Greatest Common Factor (GCF) GCF(5,0) = 5 and more generally GCF(k,0) = k for any whole number k. In this example, 5 and 0 are factors of 0.
K × 0 = 0 so, 0 ÷ k = 0 for any whole number k.įor example, 5 × 0 = 0 so it is true that 0 ÷ 5 = 0. For example, for the set of numbers 18, 30 and 42 theĪny non zero whole number times 0 equals 0 so it is true that every non zero whole number is a factor of 0.
The greatest common factor (GCF or GCD or HCF) of a set of whole numbers is the largest positive integer that divides evenly into all numbers with zero remainder. The Greatest Common Factor Calculator solution also works as a solution for finding: HCF of a set of two or more numbers and see the work using factorization.Įnter 2 or more whole numbers separated by commas or spaces.
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