LCM of 861, 442, 663, 634
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 861, 442, 663, 634 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 861, 442, 663, 634. So, keep reading to learn more.
Given numbers are 861,442,663,634
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 861,442,663,634 is 120638154.
Find LCM of 861,442,663,634 with Prime Factorization
| 2 | 861, 442, 663, 634 |
| 3 | 861, 221, 663, 317 |
| 13 | 287, 221, 221, 317 |
| 17 | 287, 17, 17, 317 |
| 287, 1, 1, 317 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 13 x 17 x 287 x 1 x 1 x 317 = 120638154
Therefore, the lowest common multiple of 861,442,663,634 is 120638154.
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.
861 x 442 x 663 x 634 = 159966192204
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.
861 : 1, 3, 7, 21, 41, 123, 287, 861
442 : 1, 2, 13, 17, 26, 34, 221, 442
663 : 1, 3, 13, 17, 39, 51, 221, 663
634 : 1, 2, 317, 634
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 861,442,663,634, is 1.
Now, the common factors can be found like this.
861:3x 7x 41
442:2x 13x 17
663:3x 13x 17
634:2x 317
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 13x 17 = 1326
Therefore, the value for common factors is 1326.
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 = 159966192204/(1x1326)
LCM = 159966192204/1326
LCM = 120638154
Thus, we can understand that the LCM of 861,442,663,634 is 120638154.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 861, 442, 663, 634
1. What is the LCM of 861, 442, 663, 634?
Answer: LCM of 861, 442, 663, 634 is 120638154.
2. How to calculate the LCM of 861, 442, 663, 634?
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 861, 442, 663, 634.
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}.