LCM of 813, 644, 628, 791
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 813, 644, 628, 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 813, 644, 628, 791. So, keep reading to learn more.
Given numbers are 813,644,628,791
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 813,644,628,791 is 9288690852.
Find LCM of 813,644,628,791 with Prime Factorization
| 2 | 813, 644, 628, 791 |
| 2 | 813, 322, 314, 791 |
| 7 | 813, 161, 157, 791 |
| 813, 23, 157, 113 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 7 x 813 x 23 x 157 x 113 = 9288690852
Therefore, the lowest common multiple of 813,644,628,791 is 9288690852.
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.
813 x 644 x 628 x 791 = 260083343856
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.
813 : 1, 3, 271, 813
644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
628 : 1, 2, 4, 157, 314, 628
791 : 1, 7, 113, 791
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 813,644,628,791, is 1.
Now, the common factors can be found like this.
813:3x 271
644:2x 2x 7x 23
628:2x 2x 157
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.
2x 2x 7 = 28
Therefore, the value for common factors is 28.
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 = 260083343856/(1x28)
LCM = 260083343856/28
LCM = 9288690852
Thus, we can understand that the LCM of 813,644,628,791 is 9288690852.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 813, 644, 628, 791
1. What is the LCM of 813, 644, 628, 791?
Answer: LCM of 813, 644, 628, 791 is 9288690852.
2. How to calculate the LCM of 813, 644, 628, 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 813, 644, 628, 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}.