LCM of 643, 351, 494, 728
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 643, 351, 494, 728 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 643, 351, 494, 728. So, keep reading to learn more.
Given numbers are 643,351,494,728
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 643,351,494,728 is 240137352.
Find LCM of 643,351,494,728 with Prime Factorization
| 2 | 643, 351, 494, 728 |
| 13 | 643, 351, 247, 364 |
| 643, 27, 19, 28 |
Multiply the prime numbers at the bottom and the left side.
2 x 13 x 643 x 27 x 19 x 28 = 240137352
Therefore, the lowest common multiple of 643,351,494,728 is 240137352.
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.
643 x 351 x 494 x 728 = 81166424976
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.
643 : 1, 643
351 : 1, 3, 9, 13, 27, 39, 117, 351
494 : 1, 2, 13, 19, 26, 38, 247, 494
728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 643,351,494,728, is 1.
Now, the common factors can be found like this.
643:643
351:3x 3x 3x 13
494:2x 13x 19
728:2x 2x 2x 7x 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 13x 13 = 338
Therefore, the value for common factors is 338.
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 = 81166424976/(1x338)
LCM = 81166424976/338
LCM = 240137352
Thus, we can understand that the LCM of 643,351,494,728 is 240137352.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 643, 351, 494, 728
1. What is the LCM of 643, 351, 494, 728?
Answer: LCM of 643, 351, 494, 728 is 240137352.
2. How to calculate the LCM of 643, 351, 494, 728?
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 643, 351, 494, 728.
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}.