LCM of 721, 230, 988, 515
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 721, 230, 988, 515 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 721, 230, 988, 515. So, keep reading to learn more.
Given numbers are 721,230,988,515
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 721,230,988,515 is 81920020.
Find LCM of 721,230,988,515 with Prime Factorization
| 2 | 721, 230, 988, 515 |
| 5 | 721, 115, 494, 515 |
| 103 | 721, 23, 494, 103 |
| 7, 23, 494, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 103 x 7 x 23 x 494 x 1 = 81920020
Therefore, the lowest common multiple of 721,230,988,515 is 81920020.
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.
721 x 230 x 988 x 515 = 84377620600
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.
721 : 1, 7, 103, 721
230 : 1, 2, 5, 10, 23, 46, 115, 230
988 : 1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988
515 : 1, 5, 103, 515
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 721,230,988,515, is 1.
Now, the common factors can be found like this.
721:7x 103
230:2x 5x 23
988:2x 2x 13x 19
515:5x 103
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 5x 103 = 1030
Therefore, the value for common factors is 1030.
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 = 84377620600/(1x1030)
LCM = 84377620600/1030
LCM = 81920020
Thus, we can understand that the LCM of 721,230,988,515 is 81920020.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 721, 230, 988, 515
1. What is the LCM of 721, 230, 988, 515?
Answer: LCM of 721, 230, 988, 515 is 81920020.
2. How to calculate the LCM of 721, 230, 988, 515?
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 721, 230, 988, 515.
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}.