LCM of 405, 142, 689, 160
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 405, 142, 689, 160 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 405, 142, 689, 160. So, keep reading to learn more.
Given numbers are 405,142,689,160
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 405,142,689,160 is 633990240.
Find LCM of 405,142,689,160 with Prime Factorization
| 2 | 405, 142, 689, 160 |
| 5 | 405, 71, 689, 80 |
| 81, 71, 689, 16 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 81 x 71 x 689 x 16 = 633990240
Therefore, the lowest common multiple of 405,142,689,160 is 633990240.
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.
405 x 142 x 689 x 160 = 6339902400
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.
405 : 1, 3, 5, 9, 15, 27, 45, 81, 135, 405
142 : 1, 2, 71, 142
689 : 1, 13, 53, 689
160 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 405,142,689,160, is 1.
Now, the common factors can be found like this.
405:3x 3x 3x 3x 5
142:2x 71
689:13x 53
160:2x 2x 2x 2x 2x 5
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 5 = 10
Therefore, the value for common factors is 10.
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 = 6339902400/(1x10)
LCM = 6339902400/10
LCM = 633990240
Thus, we can understand that the LCM of 405,142,689,160 is 633990240.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 405, 142, 689, 160
1. What is the LCM of 405, 142, 689, 160?
Answer: LCM of 405, 142, 689, 160 is 633990240.
2. How to calculate the LCM of 405, 142, 689, 160?
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 405, 142, 689, 160.
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}.