LCM of 687, 116, 435, 705
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 687, 116, 435, 705 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, 116, 435, 705. So, keep reading to learn more.
Given numbers are 687,116,435,705
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 687,116,435,705 is 18727620.
Find LCM of 687,116,435,705 with Prime Factorization
| 3 | 687, 116, 435, 705 |
| 5 | 229, 116, 145, 235 |
| 29 | 229, 116, 29, 47 |
| 229, 4, 1, 47 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 29 x 229 x 4 x 1 x 47 = 18727620
Therefore, the lowest common multiple of 687,116,435,705 is 18727620.
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 116 x 435 x 705 = 24439544100
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
116 : 1, 2, 4, 29, 58, 116
435 : 1, 3, 5, 15, 29, 87, 145, 435
705 : 1, 3, 5, 15, 47, 141, 235, 705
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 687,116,435,705, is 1.
Now, the common factors can be found like this.
687:3x 229
116:2x 2x 29
435:3x 5x 29
705:3x 5x 47
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 5x 29 = 1305
Therefore, the value for common factors is 1305.
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 = 24439544100/(1x1305)
LCM = 24439544100/1305
LCM = 18727620
Thus, we can understand that the LCM of 687,116,435,705 is 18727620.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 687, 116, 435, 705
1. What is the LCM of 687, 116, 435, 705?
Answer: LCM of 687, 116, 435, 705 is 18727620.
2. How to calculate the LCM of 687, 116, 435, 705?
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, 116, 435, 705.
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}.