LCM of 638, 542, 209, 493
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 638, 542, 209, 493 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 638, 542, 209, 493. So, keep reading to learn more.
Given numbers are 638,542,209,493
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 638,542,209,493 is 55846054.
Find LCM of 638,542,209,493 with Prime Factorization
| 2 | 638, 542, 209, 493 |
| 11 | 319, 271, 209, 493 |
| 29 | 29, 271, 19, 493 |
| 1, 271, 19, 17 |
Multiply the prime numbers at the bottom and the left side.
2 x 11 x 29 x 1 x 271 x 19 x 17 = 55846054
Therefore, the lowest common multiple of 638,542,209,493 is 55846054.
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.
638 x 542 x 209 x 493 = 35629782452
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.
638 : 1, 2, 11, 22, 29, 58, 319, 638
542 : 1, 2, 271, 542
209 : 1, 11, 19, 209
493 : 1, 17, 29, 493
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,542,209,493, is 1.
Now, the common factors can be found like this.
638:2x 11x 29
542:2x 271
209:11x 19
493:17x 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 11x 29 = 638
Therefore, the value for common factors is 638.
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 = 35629782452/(1x638)
LCM = 35629782452/638
LCM = 55846054
Thus, we can understand that the LCM of 638,542,209,493 is 55846054.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 638, 542, 209, 493
1. What is the LCM of 638, 542, 209, 493?
Answer: LCM of 638, 542, 209, 493 is 55846054.
2. How to calculate the LCM of 638, 542, 209, 493?
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 638, 542, 209, 493.
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}.