LCM of 387, 688, 387, 791
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 387, 688, 387, 791 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 387, 688, 387, 791. So, keep reading to learn more.
Given numbers are 387,688,387,791
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 387,688,387,791 is 4897872.
Find LCM of 387,688,387,791 with Prime Factorization
| 3 | 387, 688, 387, 791 |
| 3 | 129, 688, 129, 791 |
| 43 | 43, 688, 43, 791 |
| 1, 16, 1, 791 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 43 x 1 x 16 x 1 x 791 = 4897872
Therefore, the lowest common multiple of 387,688,387,791 is 4897872.
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.
387 x 688 x 387 x 791 = 81505487952
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.
387 : 1, 3, 9, 43, 129, 387
688 : 1, 2, 4, 8, 16, 43, 86, 172, 344, 688
387 : 1, 3, 9, 43, 129, 387
791 : 1, 7, 113, 791
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 387,688,387,791, is 1.
Now, the common factors can be found like this.
387:3x 3x 43
688:2x 2x 2x 2x 43
387:3x 3x 43
791:7x 113
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 43x 43 = 16641
Therefore, the value for common factors is 16641.
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 = 81505487952/(1x16641)
LCM = 81505487952/16641
LCM = 4897872
Thus, we can understand that the LCM of 387,688,387,791 is 4897872.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 387, 688, 387, 791
1. What is the LCM of 387, 688, 387, 791?
Answer: LCM of 387, 688, 387, 791 is 4897872.
2. How to calculate the LCM of 387, 688, 387, 791?
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 387, 688, 387, 791.
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}.