LCM of 418, 840, 711, 638
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 418, 840, 711, 638 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 418, 840, 711, 638. So, keep reading to learn more.
Given numbers are 418,840,711,638
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 418,840,711,638 is 1206623880.
Find LCM of 418,840,711,638 with Prime Factorization
| 2 | 418, 840, 711, 638 |
| 3 | 209, 420, 711, 319 |
| 11 | 209, 140, 237, 319 |
| 19, 140, 237, 29 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 11 x 19 x 140 x 237 x 29 = 1206623880
Therefore, the lowest common multiple of 418,840,711,638 is 1206623880.
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.
418 x 840 x 711 x 638 = 159274352160
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.
418 : 1, 2, 11, 19, 22, 38, 209, 418
840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
711 : 1, 3, 9, 79, 237, 711
638 : 1, 2, 11, 22, 29, 58, 319, 638
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 418,840,711,638, is 1.
Now, the common factors can be found like this.
418:2x 11x 19
840:2x 2x 2x 3x 5x 7
711:3x 3x 79
638:2x 11x 29
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 3x 11 = 132
Therefore, the value for common factors is 132.
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 = 159274352160/(1x132)
LCM = 159274352160/132
LCM = 1206623880
Thus, we can understand that the LCM of 418,840,711,638 is 1206623880.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 418, 840, 711, 638
1. What is the LCM of 418, 840, 711, 638?
Answer: LCM of 418, 840, 711, 638 is 1206623880.
2. How to calculate the LCM of 418, 840, 711, 638?
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 418, 840, 711, 638.
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}.