LCM of 315, 770, 389, 720
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 315, 770, 389, 720 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 315, 770, 389, 720. So, keep reading to learn more.
Given numbers are 315,770,389,720
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 315,770,389,720 is 21566160.
Find LCM of 315,770,389,720 with Prime Factorization
| 2 | 315, 770, 389, 720 |
| 3 | 315, 385, 389, 360 |
| 3 | 105, 385, 389, 120 |
| 5 | 35, 385, 389, 40 |
| 7 | 7, 77, 389, 8 |
| 1, 11, 389, 8 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 3 x 5 x 7 x 1 x 11 x 389 x 8 = 21566160
Therefore, the lowest common multiple of 315,770,389,720 is 21566160.
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.
315 x 770 x 389 x 720 = 67933404000
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.
315 : 1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315
770 : 1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770
389 : 1, 389
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
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 315,770,389,720, is 1.
Now, the common factors can be found like this.
315:3x 3x 5x 7
770:2x 5x 7x 11
389:389
720:2x 2x 2x 2x 3x 3x 5
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 3x 5x 5x 7 = 3150
Therefore, the value for common factors is 3150.
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 = 67933404000/(1x3150)
LCM = 67933404000/3150
LCM = 21566160
Thus, we can understand that the LCM of 315,770,389,720 is 21566160.
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FAQs on LCM of 315, 770, 389, 720
1. What is the LCM of 315, 770, 389, 720?
Answer: LCM of 315, 770, 389, 720 is 21566160.
2. How to calculate the LCM of 315, 770, 389, 720?
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 315, 770, 389, 720.
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}.