LCM of 680, 693, 668, 686
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 680, 693, 668, 686 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 680, 693, 668, 686. So, keep reading to learn more.
Given numbers are 680,693,668,686
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 680,693,668,686 is 3856156920.
Find LCM of 680,693,668,686 with Prime Factorization
| 2 | 680, 693, 668, 686 |
| 2 | 340, 693, 334, 343 |
| 7 | 170, 693, 167, 343 |
| 170, 99, 167, 49 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 7 x 170 x 99 x 167 x 49 = 3856156920
Therefore, the lowest common multiple of 680,693,668,686 is 3856156920.
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.
680 x 693 x 668 x 686 = 215944787520
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.
680 : 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
693 : 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693
668 : 1, 2, 4, 167, 334, 668
686 : 1, 2, 7, 14, 49, 98, 343, 686
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 680,693,668,686, is 1.
Now, the common factors can be found like this.
680:2x 2x 2x 5x 17
693:3x 3x 7x 11
668:2x 2x 167
686:2x 7x 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 2x 2x 7 = 56
Therefore, the value for common factors is 56.
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 = 215944787520/(1x56)
LCM = 215944787520/56
LCM = 3856156920
Thus, we can understand that the LCM of 680,693,668,686 is 3856156920.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 680, 693, 668, 686
1. What is the LCM of 680, 693, 668, 686?
Answer: LCM of 680, 693, 668, 686 is 3856156920.
2. How to calculate the LCM of 680, 693, 668, 686?
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 680, 693, 668, 686.
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}.