LCM of 165, 561, 815, 390
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 165, 561, 815, 390 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 165, 561, 815, 390. So, keep reading to learn more.
Given numbers are 165,561,815,390
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 165,561,815,390 is 11887590.
Find LCM of 165,561,815,390 with Prime Factorization
| 3 | 165, 561, 815, 390 |
| 5 | 55, 187, 815, 130 |
| 11 | 11, 187, 163, 26 |
| 1, 17, 163, 26 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 11 x 1 x 17 x 163 x 26 = 11887590
Therefore, the lowest common multiple of 165,561,815,390 is 11887590.
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.
165 x 561 x 815 x 390 = 29421785250
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.
165 : 1, 3, 5, 11, 15, 33, 55, 165
561 : 1, 3, 11, 17, 33, 51, 187, 561
815 : 1, 5, 163, 815
390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 165,561,815,390, is 1.
Now, the common factors can be found like this.
165:3x 5x 11
561:3x 11x 17
815:5x 163
390:2x 3x 5x 13
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 5x 5x 11 = 2475
Therefore, the value for common factors is 2475.
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 = 29421785250/(1x2475)
LCM = 29421785250/2475
LCM = 11887590
Thus, we can understand that the LCM of 165,561,815,390 is 11887590.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 165, 561, 815, 390
1. What is the LCM of 165, 561, 815, 390?
Answer: LCM of 165, 561, 815, 390 is 11887590.
2. How to calculate the LCM of 165, 561, 815, 390?
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 165, 561, 815, 390.
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}.