LCM of 638, 770, 855, 434
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 638, 770, 855, 434 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, 770, 855, 434. So, keep reading to learn more.
Given numbers are 638,770,855,434
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 638,770,855,434 is 118371330.
Find LCM of 638,770,855,434 with Prime Factorization
| 2 | 638, 770, 855, 434 |
| 5 | 319, 385, 855, 217 |
| 7 | 319, 77, 171, 217 |
| 11 | 319, 11, 171, 31 |
| 29, 1, 171, 31 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 7 x 11 x 29 x 1 x 171 x 31 = 118371330
Therefore, the lowest common multiple of 638,770,855,434 is 118371330.
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 770 x 855 x 434 = 182291848200
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
770 : 1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770
855 : 1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855
434 : 1, 2, 7, 14, 31, 62, 217, 434
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,770,855,434, is 1.
Now, the common factors can be found like this.
638:2x 11x 29
770:2x 5x 7x 11
855:3x 3x 5x 19
434:2x 7x 31
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 5x 7x 11 = 1540
Therefore, the value for common factors is 1540.
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 = 182291848200/(1x1540)
LCM = 182291848200/1540
LCM = 118371330
Thus, we can understand that the LCM of 638,770,855,434 is 118371330.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 638, 770, 855, 434
1. What is the LCM of 638, 770, 855, 434?
Answer: LCM of 638, 770, 855, 434 is 118371330.
2. How to calculate the LCM of 638, 770, 855, 434?
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, 770, 855, 434.
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}.