LCM of 391, 442, 661, 216
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 391, 442, 661, 216 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 391, 442, 661, 216. So, keep reading to learn more.
Given numbers are 391,442,661,216
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 391,442,661,216 is 725730408.
Find LCM of 391,442,661,216 with Prime Factorization
| 2 | 391, 442, 661, 216 |
| 17 | 391, 221, 661, 108 |
| 23, 13, 661, 108 |
Multiply the prime numbers at the bottom and the left side.
2 x 17 x 23 x 13 x 661 x 108 = 725730408
Therefore, the lowest common multiple of 391,442,661,216 is 725730408.
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.
391 x 442 x 661 x 216 = 24674833872
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.
391 : 1, 17, 23, 391
442 : 1, 2, 13, 17, 26, 34, 221, 442
661 : 1, 661
216 : 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 391,442,661,216, is 1.
Now, the common factors can be found like this.
391:17x 23
442:2x 13x 17
661:661
216:2x 2x 2x 3x 3x 3
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 17 = 34
Therefore, the value for common factors is 34.
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 = 24674833872/(1x34)
LCM = 24674833872/34
LCM = 725730408
Thus, we can understand that the LCM of 391,442,661,216 is 725730408.
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FAQs on LCM of 391, 442, 661, 216
1. What is the LCM of 391, 442, 661, 216?
Answer: LCM of 391, 442, 661, 216 is 725730408.
2. How to calculate the LCM of 391, 442, 661, 216?
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 391, 442, 661, 216.
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}.