LCM of 864, 640, 817, 812, 421
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 864, 640, 817, 812, 421 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 864, 640, 817, 812, 421. So, keep reading to learn more.
Given numbers are 864,640,817,812,421
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 864,640,817,812,421 is 1206546122880.
Find LCM of 864,640,817,812,421 with Prime Factorization
| 2 | 864, 640, 817, 812, 421 |
| 2 | 432, 320, 817, 406, 421 |
| 2 | 216, 160, 817, 203, 421 |
| 2 | 108, 80, 817, 203, 421 |
| 2 | 54, 40, 817, 203, 421 |
| 27, 20, 817, 203, 421 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 2 x 27 x 20 x 817 x 203 x 421 = 1206546122880
Therefore, the lowest common multiple of 864,640,817,812,421 is 1206546122880.
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.
864 x 640 x 817 x 812 x 421 = 154437903728640
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.
864 : 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 72, 96, 108, 144, 216, 288, 432, 864
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
817 : 1, 19, 43, 817
812 : 1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812
421 : 1, 421
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 864,640,817,812,421, is 1.
Now, the common factors can be found like this.
864:2x 2x 2x 2x 2x 3x 3x 3
640:2x 2x 2x 2x 2x 2x 2x 5
817:19x 43
812:2x 2x 7x 29
421:421
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 2x 2x 2x 2 = 128
Therefore, the value for common factors is 128.
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 = 154437903728640/(1x128)
LCM = 154437903728640/128
LCM = 1206546122880
Thus, we can understand that the LCM of 864,640,817,812,421 is 1206546122880.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 864, 640, 817, 812, 421
1. What is the LCM of 864, 640, 817, 812, 421?
Answer: LCM of 864, 640, 817, 812, 421 is 1206546122880.
2. How to calculate the LCM of 864, 640, 817, 812, 421?
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 864, 640, 817, 812, 421.
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}.