Find the LCM of 638, 816, 255, 786, 387 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 638, 816, 255, 786, 387. So, keep reading to learn more.
Given numbers are 638,816,255,786,387
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 638,816,255,786,387 is 21994386480.
Find LCM of 638,816,255,786,387 with Prime Factorization
2 | 638, 816, 255, 786, 387 |
3 | 319, 408, 255, 393, 387 |
17 | 319, 136, 85, 131, 129 |
319, 8, 5, 131, 129 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 17 x 319 x 8 x 5 x 131 x 129 = 21994386480
Therefore, the lowest common multiple of 638,816,255,786,387 is 21994386480.
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.
638 x 816 x 255 x 786 x 387 = 40381693577280
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.
638 : 1, 2, 11, 22, 29, 58, 319, 638
816 : 1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816
255 : 1, 3, 5, 15, 17, 51, 85, 255
786 : 1, 2, 3, 6, 131, 262, 393, 786
387 : 1, 3, 9, 43, 129, 387
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,816,255,786,387, is 1.
Now, the common factors can be found like this.
638:2x 11x 29
816:2x 2x 2x 2x 3x 17
255:3x 5x 17
786:2x 3x 131
387:3x 3x 43
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 3x 3x 17 = 1836
Therefore, the value for common factors is 1836.
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 = 40381693577280/(1x1836)
LCM = 40381693577280/1836
LCM = 21994386480
Thus, we can understand that the LCM of 638,816,255,786,387 is 21994386480.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 638, 816, 255, 786, 387?
Answer: LCM of 638, 816, 255, 786, 387 is 21994386480.
2. How to calculate the LCM of 638, 816, 255, 786, 387?
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 638, 816, 255, 786, 387.
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}.