LCM of 378, 815, 428, 988
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 378, 815, 428, 988 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 378, 815, 428, 988. So, keep reading to learn more.
Given numbers are 378,815,428,988
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 378,815,428,988 is 16283964060.
Find LCM of 378,815,428,988 with Prime Factorization
| 2 | 378, 815, 428, 988 |
| 2 | 189, 815, 214, 494 |
| 189, 815, 107, 247 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 189 x 815 x 107 x 247 = 16283964060
Therefore, the lowest common multiple of 378,815,428,988 is 16283964060.
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.
378 x 815 x 428 x 988 = 130271712480
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.
378 : 1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378
815 : 1, 5, 163, 815
428 : 1, 2, 4, 107, 214, 428
988 : 1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 378,815,428,988, is 1.
Now, the common factors can be found like this.
378:2x 3x 3x 3x 7
815:5x 163
428:2x 2x 107
988:2x 2x 13x 19
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 2 = 8
Therefore, the value for common factors is 8.
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 = 130271712480/(1x8)
LCM = 130271712480/8
LCM = 16283964060
Thus, we can understand that the LCM of 378,815,428,988 is 16283964060.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 378, 815, 428, 988
1. What is the LCM of 378, 815, 428, 988?
Answer: LCM of 378, 815, 428, 988 is 16283964060.
2. How to calculate the LCM of 378, 815, 428, 988?
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 378, 815, 428, 988.
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}.