LCM of 820, 861, 342, 704, 431
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 820, 861, 342, 704, 431 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 820, 861, 342, 704, 431. So, keep reading to learn more.
Given numbers are 820,861,342,704,431
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 820,861,342,704,431 is 74455698240.
Find LCM of 820,861,342,704,431 with Prime Factorization
| 2 | 820, 861, 342, 704, 431 |
| 2 | 410, 861, 171, 352, 431 |
| 3 | 205, 861, 171, 176, 431 |
| 41 | 205, 287, 57, 176, 431 |
| 5, 7, 57, 176, 431 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 41 x 5 x 7 x 57 x 176 x 431 = 74455698240
Therefore, the lowest common multiple of 820,861,342,704,431 is 74455698240.
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.
820 x 861 x 342 x 704 x 431 = 73264407068160
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.
820 : 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820
861 : 1, 3, 7, 21, 41, 123, 287, 861
342 : 1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342
704 : 1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 176, 352, 704
431 : 1, 431
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 820,861,342,704,431, is 1.
Now, the common factors can be found like this.
820:2x 2x 5x 41
861:3x 7x 41
342:2x 3x 3x 19
704:2x 2x 2x 2x 2x 2x 11
431:431
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 3x 41 = 984
Therefore, the value for common factors is 984.
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 = 73264407068160/(1x984)
LCM = 73264407068160/984
LCM = 74455698240
Thus, we can understand that the LCM of 820,861,342,704,431 is 74455698240.
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FAQs on LCM of 820, 861, 342, 704, 431
1. What is the LCM of 820, 861, 342, 704, 431?
Answer: LCM of 820, 861, 342, 704, 431 is 74455698240.
2. How to calculate the LCM of 820, 861, 342, 704, 431?
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 820, 861, 342, 704, 431.
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}.