LCM of 666, 720, 810, 780
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 666, 720, 810, 780 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 666, 720, 810, 780. So, keep reading to learn more.
Given numbers are 666,720,810,780
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 666,720,810,780 is 3116880.
Find LCM of 666,720,810,780 with Prime Factorization
| 2 | 666, 720, 810, 780 |
| 2 | 333, 360, 405, 390 |
| 3 | 333, 180, 405, 195 |
| 3 | 111, 60, 135, 65 |
| 5 | 37, 20, 45, 65 |
| 37, 4, 9, 13 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 5 x 37 x 4 x 9 x 13 = 3116880
Therefore, the lowest common multiple of 666,720,810,780 is 3116880.
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.
666 x 720 x 810 x 780 = 302960736000
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.
666 : 1, 2, 3, 6, 9, 18, 37, 74, 111, 222, 333, 666
720 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
810 : 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810
780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
6 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 666,720,810,780, is 6.
Now, the common factors can be found like this.
666:2x 3x 3x 37
720:2x 2x 2x 2x 3x 3x 5
810:2x 3x 3x 3x 3x 5
780:2x 2x 3x 5x 13
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 3x 5x 5 = 16200
Therefore, the value for common factors is 16200.
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 = 302960736000/(6x16200)
LCM = 302960736000/97200
LCM = 3116880
Thus, we can understand that the LCM of 666,720,810,780 is 3116880.
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FAQs on LCM of 666, 720, 810, 780
1. What is the LCM of 666, 720, 810, 780?
Answer: LCM of 666, 720, 810, 780 is 3116880.
2. How to calculate the LCM of 666, 720, 810, 780?
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 666, 720, 810, 780.
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}.