LCM of 674, 138, 731, 989
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 674, 138, 731, 989 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 674, 138, 731, 989. So, keep reading to learn more.
Given numbers are 674,138,731,989
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 674,138,731,989 is 33995886.
Find LCM of 674,138,731,989 with Prime Factorization
| 2 | 674, 138, 731, 989 |
| 23 | 337, 69, 731, 989 |
| 43 | 337, 3, 731, 43 |
| 337, 3, 17, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 23 x 43 x 337 x 3 x 17 x 1 = 33995886
Therefore, the lowest common multiple of 674,138,731,989 is 33995886.
LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
Firstly, we have to find the product of all the numbers.
674 x 138 x 731 x 989 = 67243862508
Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.
674 : 1, 2, 337, 674
138 : 1, 2, 3, 6, 23, 46, 69, 138
731 : 1, 17, 43, 731
989 : 1, 23, 43, 989
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 674,138,731,989, is 1.
Now, the common factors can be found like this.
674:2x 337
138:2x 3x 23
731:17x 43
989:23x 43
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 23x 43 = 1978
Therefore, the value for common factors is 1978.
Now that we have all the elements of the formula, we can plug them in to calculate the LCM.
LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
LCM = 67243862508/(1x1978)
LCM = 67243862508/1978
LCM = 33995886
Thus, we can understand that the LCM of 674,138,731,989 is 33995886.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 674, 138, 731, 989
1. What is the LCM of 674, 138, 731, 989?
Answer: LCM of 674, 138, 731, 989 is 33995886.
2. How to calculate the LCM of 674, 138, 731, 989?
The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 674, 138, 731, 989.
3. What is the LCM formula?
The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.