LCM of 640, 639, 396, 550, 165
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 640, 639, 396, 550, 165 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 640, 639, 396, 550, 165. So, keep reading to learn more.
Given numbers are 640,639,396,550,165
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 640,639,396,550,165 is 22492800.
Find LCM of 640,639,396,550,165 with Prime Factorization
| 2 | 640, 639, 396, 550, 165 |
| 2 | 320, 639, 198, 275, 165 |
| 3 | 160, 639, 99, 275, 165 |
| 3 | 160, 213, 33, 275, 55 |
| 5 | 160, 71, 11, 275, 55 |
| 11 | 32, 71, 11, 11, 55 |
| 32, 71, 1, 1, 5 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 5 x 11 x 32 x 71 x 1 x 1 x 5 = 22492800
Therefore, the lowest common multiple of 640,639,396,550,165 is 22492800.
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.
640 x 639 x 396 x 550 x 165 = 14696795520000
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.
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
639 : 1, 3, 9, 71, 213, 639
396 : 1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 396
550 : 1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 275, 550
165 : 1, 3, 5, 11, 15, 33, 55, 165
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 640,639,396,550,165, is 1.
Now, the common factors can be found like this.
640:2x 2x 2x 2x 2x 2x 2x 5
639:3x 3x 71
396:2x 2x 3x 3x 11
550:2x 5x 5x 11
165:3x 5x 11
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 3x 3x 3x 5x 5x 11x 11 = 653400
Therefore, the value for common factors is 653400.
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 = 14696795520000/(1x653400)
LCM = 14696795520000/653400
LCM = 22492800
Thus, we can understand that the LCM of 640,639,396,550,165 is 22492800.
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FAQs on LCM of 640, 639, 396, 550, 165
1. What is the LCM of 640, 639, 396, 550, 165?
Answer: LCM of 640, 639, 396, 550, 165 is 22492800.
2. How to calculate the LCM of 640, 639, 396, 550, 165?
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 640, 639, 396, 550, 165.
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}.