LCM of 243, 638, 691, 381
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 243, 638, 691, 381 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 243, 638, 691, 381. So, keep reading to learn more.
Given numbers are 243,638,691,381
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 243,638,691,381 is 13605318738.
Find LCM of 243,638,691,381 with Prime Factorization
| 3 | 243, 638, 691, 381 |
| 81, 638, 691, 127 |
Multiply the prime numbers at the bottom and the left side.
3 x 81 x 638 x 691 x 127 = 13605318738
Therefore, the lowest common multiple of 243,638,691,381 is 13605318738.
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.
243 x 638 x 691 x 381 = 40815956214
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.
243 : 1, 3, 9, 27, 81, 243
638 : 1, 2, 11, 22, 29, 58, 319, 638
691 : 1, 691
381 : 1, 3, 127, 381
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 243,638,691,381, is 1.
Now, the common factors can be found like this.
243:3x 3x 3x 3x 3
638:2x 11x 29
691:691
381:3x 127
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3 = 3
Therefore, the value for common factors is 3.
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 = 40815956214/(1x3)
LCM = 40815956214/3
LCM = 13605318738
Thus, we can understand that the LCM of 243,638,691,381 is 13605318738.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 243, 638, 691, 381
1. What is the LCM of 243, 638, 691, 381?
Answer: LCM of 243, 638, 691, 381 is 13605318738.
2. How to calculate the LCM of 243, 638, 691, 381?
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 243, 638, 691, 381.
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}.