LCM of 312, 405, 135, 390
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 312, 405, 135, 390 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 312, 405, 135, 390. So, keep reading to learn more.
Given numbers are 312,405,135,390
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 312,405,135,390 is 42120.
Find LCM of 312,405,135,390 with Prime Factorization
| 2 | 312, 405, 135, 390 |
| 3 | 156, 405, 135, 195 |
| 3 | 52, 45, 135, 65 |
| 3 | 52, 15, 45, 65 |
| 5 | 52, 5, 15, 65 |
| 13 | 52, 1, 3, 13 |
| 4, 1, 3, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 3 x 3 x 5 x 13 x 4 x 1 x 3 x 1 = 42120
Therefore, the lowest common multiple of 312,405,135,390 is 42120.
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.
312 x 405 x 135 x 390 = 6652854000
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.
312 : 1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312
405 : 1, 3, 5, 9, 15, 27, 45, 81, 135, 405
135 : 1, 3, 5, 9, 15, 27, 45, 135
390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 312,405,135,390, is 3.
Now, the common factors can be found like this.
312:2x 2x 2x 3x 13
405:3x 3x 3x 3x 5
135:3x 3x 3x 5
390:2x 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 3x 3x 3x 3x 5x 5x 13 = 52650
Therefore, the value for common factors is 52650.
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 = 6652854000/(3x52650)
LCM = 6652854000/157950
LCM = 42120
Thus, we can understand that the LCM of 312,405,135,390 is 42120.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 312, 405, 135, 390
1. What is the LCM of 312, 405, 135, 390?
Answer: LCM of 312, 405, 135, 390 is 42120.
2. How to calculate the LCM of 312, 405, 135, 390?
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 312, 405, 135, 390.
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}.