LCM of 721, 272, 686, 343
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 721, 272, 686, 343 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, 272, 686, 343. So, keep reading to learn more.
Given numbers are 721,272,686,343
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 721,272,686,343 is 9609488.
Find LCM of 721,272,686,343 with Prime Factorization
| 2 | 721, 272, 686, 343 |
| 7 | 721, 136, 343, 343 |
| 7 | 103, 136, 49, 49 |
| 7 | 103, 136, 7, 7 |
| 103, 136, 1, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 7 x 7 x 7 x 103 x 136 x 1 x 1 = 9609488
Therefore, the lowest common multiple of 721,272,686,343 is 9609488.
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 272 x 686 x 343 = 46144761376
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
272 : 1, 2, 4, 8, 16, 17, 34, 68, 136, 272
686 : 1, 2, 7, 14, 49, 98, 343, 686
343 : 1, 7, 49, 343
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 721,272,686,343, is 1.
Now, the common factors can be found like this.
721:7x 103
272:2x 2x 2x 2x 17
686:2x 7x 7x 7
343:7x 7x 7
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 7x 7x 7x 7 = 4802
Therefore, the value for common factors is 4802.
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 = 46144761376/(1x4802)
LCM = 46144761376/4802
LCM = 9609488
Thus, we can understand that the LCM of 721,272,686,343 is 9609488.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 721, 272, 686, 343
1. What is the LCM of 721, 272, 686, 343?
Answer: LCM of 721, 272, 686, 343 is 9609488.
2. How to calculate the LCM of 721, 272, 686, 343?
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, 272, 686, 343.
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}.