LCM of 725, 986, 920, 690
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 725, 986, 920, 690 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 725, 986, 920, 690. So, keep reading to learn more.
Given numbers are 725,986,920,690
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 725,986,920,690 is 6803400.
Find LCM of 725,986,920,690 with Prime Factorization
| 2 | 725, 986, 920, 690 |
| 5 | 725, 493, 460, 345 |
| 23 | 145, 493, 92, 69 |
| 29 | 145, 493, 4, 3 |
| 5, 17, 4, 3 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 23 x 29 x 5 x 17 x 4 x 3 = 6803400
Therefore, the lowest common multiple of 725,986,920,690 is 6803400.
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.
725 x 986 x 920 x 690 = 453786780000
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.
725 : 1, 5, 25, 29, 145, 725
986 : 1, 2, 17, 29, 34, 58, 493, 986
920 : 1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920
690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 725,986,920,690, is 1.
Now, the common factors can be found like this.
725:5x 5x 29
986:2x 17x 29
920:2x 2x 2x 5x 23
690:2x 3x 5x 23
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 5x 5x 23x 29 = 66700
Therefore, the value for common factors is 66700.
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 = 453786780000/(1x66700)
LCM = 453786780000/66700
LCM = 6803400
Thus, we can understand that the LCM of 725,986,920,690 is 6803400.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 725, 986, 920, 690
1. What is the LCM of 725, 986, 920, 690?
Answer: LCM of 725, 986, 920, 690 is 6803400.
2. How to calculate the LCM of 725, 986, 920, 690?
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 725, 986, 920, 690.
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}.