LCM of 686, 836, 618, 660
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 686, 836, 618, 660 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, 836, 618, 660. So, keep reading to learn more.
Given numbers are 686,836,618,660
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 686,836,618,660 is 443025660.
Find LCM of 686,836,618,660 with Prime Factorization
| 2 | 686, 836, 618, 660 |
| 2 | 343, 418, 309, 330 |
| 3 | 343, 209, 309, 165 |
| 11 | 343, 209, 103, 55 |
| 343, 19, 103, 5 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 11 x 343 x 19 x 103 x 5 = 443025660
Therefore, the lowest common multiple of 686,836,618,660 is 443025660.
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 836 x 618 x 660 = 233917548480
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
836 : 1, 2, 4, 11, 19, 22, 38, 44, 76, 209, 418, 836
618 : 1, 2, 3, 6, 103, 206, 309, 618
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
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 686,836,618,660, is 2.
Now, the common factors can be found like this.
686:2x 7x 7x 7
836:2x 2x 11x 19
618:2x 3x 103
660:2x 2x 3x 5x 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 3x 11 = 264
Therefore, the value for common factors is 264.
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 = 233917548480/(2x264)
LCM = 233917548480/528
LCM = 443025660
Thus, we can understand that the LCM of 686,836,618,660 is 443025660.
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FAQs on LCM of 686, 836, 618, 660
1. What is the LCM of 686, 836, 618, 660?
Answer: LCM of 686, 836, 618, 660 is 443025660.
2. How to calculate the LCM of 686, 836, 618, 660?
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, 836, 618, 660.
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}.