LCM of 639, 878, 728, 407, 407
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 639, 878, 728, 407, 407 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 639, 878, 728, 407, 407. So, keep reading to learn more.
Given numbers are 639,878,728,407,407
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 639,878,728,407,407 is 83117250216.
Find LCM of 639,878,728,407,407 with Prime Factorization
| 2 | 639, 878, 728, 407, 407 |
| 11 | 639, 439, 364, 407, 407 |
| 37 | 639, 439, 364, 37, 37 |
| 639, 439, 364, 1, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 11 x 37 x 639 x 439 x 364 x 1 x 1 = 83117250216
Therefore, the lowest common multiple of 639,878,728,407,407 is 83117250216.
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.
639 x 878 x 728 x 407 x 407 = 67657441675824
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.
639 : 1, 3, 9, 71, 213, 639
878 : 1, 2, 439, 878
728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
407 : 1, 11, 37, 407
407 : 1, 11, 37, 407
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 639,878,728,407,407, is 1.
Now, the common factors can be found like this.
639:3x 3x 71
878:2x 439
728:2x 2x 2x 7x 13
407:11x 37
407:11x 37
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 11x 37 = 814
Therefore, the value for common factors is 814.
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 = 67657441675824/(1x814)
LCM = 67657441675824/814
LCM = 83117250216
Thus, we can understand that the LCM of 639,878,728,407,407 is 83117250216.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 639, 878, 728, 407, 407
1. What is the LCM of 639, 878, 728, 407, 407?
Answer: LCM of 639, 878, 728, 407, 407 is 83117250216.
2. How to calculate the LCM of 639, 878, 728, 407, 407?
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 639, 878, 728, 407, 407.
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}.