LCM of 815, 711, 824, 390
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 815, 711, 824, 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 815, 711, 824, 390. So, keep reading to learn more.
Given numbers are 815,711,824,390
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 815,711,824,390 is 6207229080.
Find LCM of 815,711,824,390 with Prime Factorization
| 2 | 815, 711, 824, 390 |
| 3 | 815, 711, 412, 195 |
| 5 | 815, 237, 412, 65 |
| 163, 237, 412, 13 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 163 x 237 x 412 x 13 = 6207229080
Therefore, the lowest common multiple of 815,711,824,390 is 6207229080.
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.
815 x 711 x 824 x 390 = 186216872400
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.
815 : 1, 5, 163, 815
711 : 1, 3, 9, 79, 237, 711
824 : 1, 2, 4, 8, 103, 206, 412, 824
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 815,711,824,390, is 1.
Now, the common factors can be found like this.
815:5x 163
711:3x 3x 79
824:2x 2x 2x 103
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.
2x 3x 5 = 30
Therefore, the value for common factors is 30.
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 = 186216872400/(1x30)
LCM = 186216872400/30
LCM = 6207229080
Thus, we can understand that the LCM of 815,711,824,390 is 6207229080.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 815, 711, 824, 390
1. What is the LCM of 815, 711, 824, 390?
Answer: LCM of 815, 711, 824, 390 is 6207229080.
2. How to calculate the LCM of 815, 711, 824, 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 815, 711, 824, 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}.