LCM of 271, 820, 428, 642
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 271, 820, 428, 642 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 271, 820, 428, 642. So, keep reading to learn more.
Given numbers are 271,820,428,642
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 271,820,428,642 is 71332620.
Find LCM of 271,820,428,642 with Prime Factorization
| 2 | 271, 820, 428, 642 |
| 2 | 271, 410, 214, 321 |
| 107 | 271, 205, 107, 321 |
| 271, 205, 1, 3 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 107 x 271 x 205 x 1 x 3 = 71332620
Therefore, the lowest common multiple of 271,820,428,642 is 71332620.
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.
271 x 820 x 428 x 642 = 61060722720
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.
271 : 1, 271
820 : 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820
428 : 1, 2, 4, 107, 214, 428
642 : 1, 2, 3, 6, 107, 214, 321, 642
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 271,820,428,642, is 1.
Now, the common factors can be found like this.
271:271
820:2x 2x 5x 41
428:2x 2x 107
642:2x 3x 107
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 107 = 856
Therefore, the value for common factors is 856.
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 = 61060722720/(1x856)
LCM = 61060722720/856
LCM = 71332620
Thus, we can understand that the LCM of 271,820,428,642 is 71332620.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 271, 820, 428, 642
1. What is the LCM of 271, 820, 428, 642?
Answer: LCM of 271, 820, 428, 642 is 71332620.
2. How to calculate the LCM of 271, 820, 428, 642?
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 271, 820, 428, 642.
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}.