LCM of 428, 705, 351, 858
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 428, 705, 351, 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 428, 705, 351, 858. So, keep reading to learn more.
Given numbers are 428,705,351,858
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 428,705,351,858 is 388339380.
Find LCM of 428,705,351,858 with Prime Factorization
| 2 | 428, 705, 351, 858 |
| 3 | 214, 705, 351, 429 |
| 13 | 214, 235, 117, 143 |
| 214, 235, 9, 11 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 13 x 214 x 235 x 9 x 11 = 388339380
Therefore, the lowest common multiple of 428,705,351,858 is 388339380.
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.
428 x 705 x 351 x 858 = 90871414920
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.
428 : 1, 2, 4, 107, 214, 428
705 : 1, 3, 5, 15, 47, 141, 235, 705
351 : 1, 3, 9, 13, 27, 39, 117, 351
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 428,705,351,858, is 1.
Now, the common factors can be found like this.
428:2x 2x 107
705:3x 5x 47
351:3x 3x 3x 13
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 3x 3x 13 = 234
Therefore, the value for common factors is 234.
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 = 90871414920/(1x234)
LCM = 90871414920/234
LCM = 388339380
Thus, we can understand that the LCM of 428,705,351,858 is 388339380.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 428, 705, 351, 858
1. What is the LCM of 428, 705, 351, 858?
Answer: LCM of 428, 705, 351, 858 is 388339380.
2. How to calculate the LCM of 428, 705, 351, 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 428, 705, 351, 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}.