LCM of 718, 408, 720, 989
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 718, 408, 720, 989 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 718, 408, 720, 989. So, keep reading to learn more.
Given numbers are 718,408,720,989
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 718,408,720,989 is 4345824240.
Find LCM of 718,408,720,989 with Prime Factorization
| 2 | 718, 408, 720, 989 |
| 2 | 359, 204, 360, 989 |
| 2 | 359, 102, 180, 989 |
| 3 | 359, 51, 90, 989 |
| 359, 17, 30, 989 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 359 x 17 x 30 x 989 = 4345824240
Therefore, the lowest common multiple of 718,408,720,989 is 4345824240.
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.
718 x 408 x 720 x 989 = 208599563520
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.
718 : 1, 2, 359, 718
408 : 1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204, 408
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
989 : 1, 23, 43, 989
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 718,408,720,989, is 1.
Now, the common factors can be found like this.
718:2x 359
408:2x 2x 2x 3x 17
720:2x 2x 2x 2x 3x 3x 5
989:23x 43
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 3 = 48
Therefore, the value for common factors is 48.
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 = 208599563520/(1x48)
LCM = 208599563520/48
LCM = 4345824240
Thus, we can understand that the LCM of 718,408,720,989 is 4345824240.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 718, 408, 720, 989
1. What is the LCM of 718, 408, 720, 989?
Answer: LCM of 718, 408, 720, 989 is 4345824240.
2. How to calculate the LCM of 718, 408, 720, 989?
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 718, 408, 720, 989.
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}.