LCM of 660, 173, 403, 638
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 660, 173, 403, 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 660, 173, 403, 638. So, keep reading to learn more.
Given numbers are 660,173,403,638
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 660,173,403,638 is 1334421660.
Find LCM of 660,173,403,638 with Prime Factorization
| 2 | 660, 173, 403, 638 |
| 11 | 330, 173, 403, 319 |
| 30, 173, 403, 29 |
Multiply the prime numbers at the bottom and the left side.
2 x 11 x 30 x 173 x 403 x 29 = 1334421660
Therefore, the lowest common multiple of 660,173,403,638 is 1334421660.
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.
660 x 173 x 403 x 638 = 29357276520
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.
660 : 1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660
173 : 1, 173
403 : 1, 13, 31, 403
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 660,173,403,638, is 1.
Now, the common factors can be found like this.
660:2x 2x 3x 5x 11
173:173
403:13x 31
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 11 = 22
Therefore, the value for common factors is 22.
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 = 29357276520/(1x22)
LCM = 29357276520/22
LCM = 1334421660
Thus, we can understand that the LCM of 660,173,403,638 is 1334421660.
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FAQs on LCM of 660, 173, 403, 638
1. What is the LCM of 660, 173, 403, 638?
Answer: LCM of 660, 173, 403, 638 is 1334421660.
2. How to calculate the LCM of 660, 173, 403, 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 660, 173, 403, 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}.