LCM of 511, 390, 391, 805
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 511, 390, 391, 805 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 511, 390, 391, 805. So, keep reading to learn more.
Given numbers are 511,390,391,805
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 511,390,391,805 is 77922390.
Find LCM of 511,390,391,805 with Prime Factorization
| 5 | 511, 390, 391, 805 |
| 7 | 511, 78, 391, 161 |
| 23 | 73, 78, 391, 23 |
| 73, 78, 17, 1 |
Multiply the prime numbers at the bottom and the left side.
5 x 7 x 23 x 73 x 78 x 17 x 1 = 77922390
Therefore, the lowest common multiple of 511,390,391,805 is 77922390.
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.
511 x 390 x 391 x 805 = 62727523950
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.
511 : 1, 7, 73, 511
390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
391 : 1, 17, 23, 391
805 : 1, 5, 7, 23, 35, 115, 161, 805
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 511,390,391,805, is 1.
Now, the common factors can be found like this.
511:7x 73
390:2x 3x 5x 13
391:17x 23
805:5x 7x 23
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
5x 7x 23 = 805
Therefore, the value for common factors is 805.
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 = 62727523950/(1x805)
LCM = 62727523950/805
LCM = 77922390
Thus, we can understand that the LCM of 511,390,391,805 is 77922390.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 511, 390, 391, 805
1. What is the LCM of 511, 390, 391, 805?
Answer: LCM of 511, 390, 391, 805 is 77922390.
2. How to calculate the LCM of 511, 390, 391, 805?
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 511, 390, 391, 805.
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}.