LCM of 642, 809, 705, 432
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 642, 809, 705, 432 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 642, 809, 705, 432. So, keep reading to learn more.
Given numbers are 642,809,705,432
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 642,809,705,432 is 8787875760.
Find LCM of 642,809,705,432 with Prime Factorization
| 2 | 642, 809, 705, 432 |
| 3 | 321, 809, 705, 216 |
| 107, 809, 235, 72 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 107 x 809 x 235 x 72 = 8787875760
Therefore, the lowest common multiple of 642,809,705,432 is 8787875760.
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.
642 x 809 x 705 x 432 = 158181763680
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.
642 : 1, 2, 3, 6, 107, 214, 321, 642
809 : 1, 809
705 : 1, 3, 5, 15, 47, 141, 235, 705
432 : 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 144, 216, 432
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 642,809,705,432, is 1.
Now, the common factors can be found like this.
642:2x 3x 107
809:809
705:3x 5x 47
432:2x 2x 2x 2x 3x 3x 3
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 3 = 18
Therefore, the value for common factors is 18.
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 = 158181763680/(1x18)
LCM = 158181763680/18
LCM = 8787875760
Thus, we can understand that the LCM of 642,809,705,432 is 8787875760.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 642, 809, 705, 432
1. What is the LCM of 642, 809, 705, 432?
Answer: LCM of 642, 809, 705, 432 is 8787875760.
2. How to calculate the LCM of 642, 809, 705, 432?
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 642, 809, 705, 432.
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}.