LCM of 520, 218, 686, 813, 728
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 520, 218, 686, 813, 728 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 520, 218, 686, 813, 728. So, keep reading to learn more.
Given numbers are 520,218,686,813,728
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 520,218,686,813,728 is 15805728120.
Find LCM of 520,218,686,813,728 with Prime Factorization
| 2 | 520, 218, 686, 813, 728 |
| 2 | 260, 109, 343, 813, 364 |
| 2 | 130, 109, 343, 813, 182 |
| 7 | 65, 109, 343, 813, 91 |
| 13 | 65, 109, 49, 813, 13 |
| 5, 109, 49, 813, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 7 x 13 x 5 x 109 x 49 x 813 x 1 = 15805728120
Therefore, the lowest common multiple of 520,218,686,813,728 is 15805728120.
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.
520 x 218 x 686 x 813 x 728 = 46026280285440
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.
520 : 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520
218 : 1, 2, 109, 218
686 : 1, 2, 7, 14, 49, 98, 343, 686
813 : 1, 3, 271, 813
728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 520,218,686,813,728, is 1.
Now, the common factors can be found like this.
520:2x 2x 2x 5x 13
218:2x 109
686:2x 7x 7x 7
813:3x 271
728:2x 2x 2x 7x 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 2x 2x 2x 2x 7x 13 = 2912
Therefore, the value for common factors is 2912.
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 = 46026280285440/(1x2912)
LCM = 46026280285440/2912
LCM = 15805728120
Thus, we can understand that the LCM of 520,218,686,813,728 is 15805728120.
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FAQs on LCM of 520, 218, 686, 813, 728
1. What is the LCM of 520, 218, 686, 813, 728?
Answer: LCM of 520, 218, 686, 813, 728 is 15805728120.
2. How to calculate the LCM of 520, 218, 686, 813, 728?
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 520, 218, 686, 813, 728.
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}.