LCM of 720, 409, 405, 656
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 720, 409, 405, 656 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 720, 409, 405, 656. So, keep reading to learn more.
Given numbers are 720,409,405,656
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 720,409,405,656 is 108663120.
Find LCM of 720,409,405,656 with Prime Factorization
| 2 | 720, 409, 405, 656 |
| 2 | 360, 409, 405, 328 |
| 2 | 180, 409, 405, 164 |
| 2 | 90, 409, 405, 82 |
| 3 | 45, 409, 405, 41 |
| 3 | 15, 409, 135, 41 |
| 5 | 5, 409, 45, 41 |
| 1, 409, 9, 41 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 3 x 3 x 5 x 1 x 409 x 9 x 41 = 108663120
Therefore, the lowest common multiple of 720,409,405,656 is 108663120.
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.
720 x 409 x 405 x 656 = 78237446400
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.
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
409 : 1, 409
405 : 1, 3, 5, 9, 15, 27, 45, 81, 135, 405
656 : 1, 2, 4, 8, 16, 41, 82, 164, 328, 656
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 720,409,405,656, is 1.
Now, the common factors can be found like this.
720:2x 2x 2x 2x 3x 3x 5
409:409
405:3x 3x 3x 3x 5
656:2x 2x 2x 2x 41
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 3x 3x 5 = 720
Therefore, the value for common factors is 720.
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 = 78237446400/(1x720)
LCM = 78237446400/720
LCM = 108663120
Thus, we can understand that the LCM of 720,409,405,656 is 108663120.
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FAQs on LCM of 720, 409, 405, 656
1. What is the LCM of 720, 409, 405, 656?
Answer: LCM of 720, 409, 405, 656 is 108663120.
2. How to calculate the LCM of 720, 409, 405, 656?
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 720, 409, 405, 656.
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}.