LCM of 821, 418, 123, 798
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 821, 418, 123, 798 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 821, 418, 123, 798. So, keep reading to learn more.
Given numbers are 821,418,123,798
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 821,418,123,798 is 295476258.
Find LCM of 821,418,123,798 with Prime Factorization
| 2 | 821, 418, 123, 798 |
| 3 | 821, 209, 123, 399 |
| 19 | 821, 209, 41, 133 |
| 821, 11, 41, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 19 x 821 x 11 x 41 x 7 = 295476258
Therefore, the lowest common multiple of 821,418,123,798 is 295476258.
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.
821 x 418 x 123 x 798 = 33684293412
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.
821 : 1, 821
418 : 1, 2, 11, 19, 22, 38, 209, 418
123 : 1, 3, 41, 123
798 : 1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 798
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 821,418,123,798, is 1.
Now, the common factors can be found like this.
821:821
418:2x 11x 19
123:3x 41
798:2x 3x 7x 19
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 19 = 114
Therefore, the value for common factors is 114.
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 = 33684293412/(1x114)
LCM = 33684293412/114
LCM = 295476258
Thus, we can understand that the LCM of 821,418,123,798 is 295476258.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 821, 418, 123, 798
1. What is the LCM of 821, 418, 123, 798?
Answer: LCM of 821, 418, 123, 798 is 295476258.
2. How to calculate the LCM of 821, 418, 123, 798?
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 821, 418, 123, 798.
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}.