LCM of 681, 608, 646, 858
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 681, 608, 646, 858 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 681, 608, 646, 858. So, keep reading to learn more.
Given numbers are 681,608,646,858
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 681,608,646,858 is 1006550688.
Find LCM of 681,608,646,858 with Prime Factorization
| 2 | 681, 608, 646, 858 |
| 3 | 681, 304, 323, 429 |
| 19 | 227, 304, 323, 143 |
| 227, 16, 17, 143 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 19 x 227 x 16 x 17 x 143 = 1006550688
Therefore, the lowest common multiple of 681,608,646,858 is 1006550688.
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.
681 x 608 x 646 x 858 = 229493556864
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.
681 : 1, 3, 227, 681
608 : 1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 304, 608
646 : 1, 2, 17, 19, 34, 38, 323, 646
858 : 1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 143, 286, 429, 858
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 681,608,646,858, is 1.
Now, the common factors can be found like this.
681:3x 227
608:2x 2x 2x 2x 2x 19
646:2x 17x 19
858:2x 3x 11x 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 3x 19 = 228
Therefore, the value for common factors is 228.
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 = 229493556864/(1x228)
LCM = 229493556864/228
LCM = 1006550688
Thus, we can understand that the LCM of 681,608,646,858 is 1006550688.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 681, 608, 646, 858
1. What is the LCM of 681, 608, 646, 858?
Answer: LCM of 681, 608, 646, 858 is 1006550688.
2. How to calculate the LCM of 681, 608, 646, 858?
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 681, 608, 646, 858.
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}.