LCM of 640, 561, 330, 571, 660
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 640, 561, 330, 571, 660 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, 561, 330, 571, 660. So, keep reading to learn more.
Given numbers are 640,561,330,571,660
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 640,561,330,571,660 is 205011840.
Find LCM of 640,561,330,571,660 with Prime Factorization
| 2 | 640, 561, 330, 571, 660 |
| 2 | 320, 561, 165, 571, 330 |
| 3 | 160, 561, 165, 571, 165 |
| 5 | 160, 187, 55, 571, 55 |
| 11 | 32, 187, 11, 571, 11 |
| 32, 17, 1, 571, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 11 x 32 x 17 x 1 x 571 x 1 = 205011840
Therefore, the lowest common multiple of 640,561,330,571,660 is 205011840.
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 561 x 330 x 571 x 660 = 44651578752000
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
561 : 1, 3, 11, 17, 33, 51, 187, 561
330 : 1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 330
571 : 1, 571
660 : 1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 640,561,330,571,660, is 1.
Now, the common factors can be found like this.
640:2x 2x 2x 2x 2x 2x 2x 5
561:3x 11x 17
330:2x 3x 5x 11
571:571
660:2x 2x 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 5x 5x 11x 11 = 217800
Therefore, the value for common factors is 217800.
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 = 44651578752000/(1x217800)
LCM = 44651578752000/217800
LCM = 205011840
Thus, we can understand that the LCM of 640,561,330,571,660 is 205011840.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 640, 561, 330, 571, 660
1. What is the LCM of 640, 561, 330, 571, 660?
Answer: LCM of 640, 561, 330, 571, 660 is 205011840.
2. How to calculate the LCM of 640, 561, 330, 571, 660?
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, 561, 330, 571, 660.
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}.