LCM of 388, 988, 779, 784
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 388, 988, 779, 784 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 388, 988, 779, 784. So, keep reading to learn more.
Given numbers are 388,988,779,784
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 388,988,779,784 is 770138096.
Find LCM of 388,988,779,784 with Prime Factorization
| 2 | 388, 988, 779, 784 |
| 2 | 194, 494, 779, 392 |
| 19 | 97, 247, 779, 196 |
| 97, 13, 41, 196 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 19 x 97 x 13 x 41 x 196 = 770138096
Therefore, the lowest common multiple of 388,988,779,784 is 770138096.
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.
388 x 988 x 779 x 784 = 234121981184
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.
388 : 1, 2, 4, 97, 194, 388
988 : 1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988
779 : 1, 19, 41, 779
784 : 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 388,988,779,784, is 1.
Now, the common factors can be found like this.
388:2x 2x 97
988:2x 2x 13x 19
779:19x 41
784:2x 2x 2x 2x 7x 7
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 19 = 304
Therefore, the value for common factors is 304.
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 = 234121981184/(1x304)
LCM = 234121981184/304
LCM = 770138096
Thus, we can understand that the LCM of 388,988,779,784 is 770138096.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 388, 988, 779, 784
1. What is the LCM of 388, 988, 779, 784?
Answer: LCM of 388, 988, 779, 784 is 770138096.
2. How to calculate the LCM of 388, 988, 779, 784?
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 388, 988, 779, 784.
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}.