LCM of 687, 779, 126, 646
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 687, 779, 126, 646 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, 779, 126, 646. So, keep reading to learn more.
Given numbers are 687,779,126,646
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 687,779,126,646 is 382113522.
Find LCM of 687,779,126,646 with Prime Factorization
| 2 | 687, 779, 126, 646 |
| 3 | 687, 779, 63, 323 |
| 19 | 229, 779, 21, 323 |
| 229, 41, 21, 17 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 19 x 229 x 41 x 21 x 17 = 382113522
Therefore, the lowest common multiple of 687,779,126,646 is 382113522.
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 779 x 126 x 646 = 43560941508
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
779 : 1, 19, 41, 779
126 : 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126
646 : 1, 2, 17, 19, 34, 38, 323, 646
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 687,779,126,646, is 1.
Now, the common factors can be found like this.
687:3x 229
779:19x 41
126:2x 3x 3x 7
646:2x 17x 19
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 19 = 114
Therefore, the value for common factors is 114.
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 = 43560941508/(1x114)
LCM = 43560941508/114
LCM = 382113522
Thus, we can understand that the LCM of 687,779,126,646 is 382113522.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 687, 779, 126, 646
1. What is the LCM of 687, 779, 126, 646?
Answer: LCM of 687, 779, 126, 646 is 382113522.
2. How to calculate the LCM of 687, 779, 126, 646?
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, 779, 126, 646.
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}.