LCM of 686, 128, 638, 308, 132
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 686, 128, 638, 308, 132 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 686, 128, 638, 308, 132. So, keep reading to learn more.
Given numbers are 686,128,638,308,132
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 686,128,638,308,132 is 42016128.
Find LCM of 686,128,638,308,132 with Prime Factorization
| 2 | 686, 128, 638, 308, 132 |
| 2 | 343, 64, 319, 154, 66 |
| 7 | 343, 32, 319, 77, 33 |
| 11 | 49, 32, 319, 11, 33 |
| 49, 32, 29, 1, 3 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 7 x 11 x 49 x 32 x 29 x 1 x 3 = 42016128
Therefore, the lowest common multiple of 686,128,638,308,132 is 42016128.
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.
686 x 128 x 638 x 308 x 132 = 2277610266624
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.
686 : 1, 2, 7, 14, 49, 98, 343, 686
128 : 1, 2, 4, 8, 16, 32, 64, 128
638 : 1, 2, 11, 22, 29, 58, 319, 638
308 : 1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308
132 : 1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 686,128,638,308,132, is 2.
Now, the common factors can be found like this.
686:2x 7x 7x 7
128:2x 2x 2x 2x 2x 2x 2
638:2x 11x 29
308:2x 2x 7x 11
132:2x 2x 3x 11
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 2x 2x 2x 7x 11x 11 = 27104
Therefore, the value for common factors is 27104.
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 = 2277610266624/(2x27104)
LCM = 2277610266624/54208
LCM = 42016128
Thus, we can understand that the LCM of 686,128,638,308,132 is 42016128.
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FAQs on LCM of 686, 128, 638, 308, 132
1. What is the LCM of 686, 128, 638, 308, 132?
Answer: LCM of 686, 128, 638, 308, 132 is 42016128.
2. How to calculate the LCM of 686, 128, 638, 308, 132?
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 686, 128, 638, 308, 132.
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}.