LCM of 687, 646, 399, 882
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 687, 646, 399, 882 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 687, 646, 399, 882. So, keep reading to learn more.
Given numbers are 687,646,399,882
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 687,646,399,882 is 65238894.
Find LCM of 687,646,399,882 with Prime Factorization
| 2 | 687, 646, 399, 882 |
| 3 | 687, 323, 399, 441 |
| 7 | 229, 323, 133, 147 |
| 19 | 229, 323, 19, 21 |
| 229, 17, 1, 21 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 7 x 19 x 229 x 17 x 1 x 21 = 65238894
Therefore, the lowest common multiple of 687,646,399,882 is 65238894.
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.
687 x 646 x 399 x 882 = 156181912236
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.
687 : 1, 3, 229, 687
646 : 1, 2, 17, 19, 34, 38, 323, 646
399 : 1, 3, 7, 19, 21, 57, 133, 399
882 : 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 147, 294, 441, 882
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 687,646,399,882, is 1.
Now, the common factors can be found like this.
687:3x 229
646:2x 17x 19
399:3x 7x 19
882:2x 3x 3x 7x 7
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 3x 7x 19 = 2394
Therefore, the value for common factors is 2394.
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 = 156181912236/(1x2394)
LCM = 156181912236/2394
LCM = 65238894
Thus, we can understand that the LCM of 687,646,399,882 is 65238894.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 687, 646, 399, 882
1. What is the LCM of 687, 646, 399, 882?
Answer: LCM of 687, 646, 399, 882 is 65238894.
2. How to calculate the LCM of 687, 646, 399, 882?
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 687, 646, 399, 882.
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}.