LCM of 731, 543, 680, 905
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 731, 543, 680, 905 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 731, 543, 680, 905. So, keep reading to learn more.
Given numbers are 731,543,680,905
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 731,543,680,905 is 15877320.
Find LCM of 731,543,680,905 with Prime Factorization
| 5 | 731, 543, 680, 905 |
| 17 | 731, 543, 136, 181 |
| 181 | 43, 543, 8, 181 |
| 43, 3, 8, 1 |
Multiply the prime numbers at the bottom and the left side.
5 x 17 x 181 x 43 x 3 x 8 x 1 = 15877320
Therefore, the lowest common multiple of 731,543,680,905 is 15877320.
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.
731 x 543 x 680 x 905 = 244272568200
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.
731 : 1, 17, 43, 731
543 : 1, 3, 181, 543
680 : 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
905 : 1, 5, 181, 905
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 731,543,680,905, is 1.
Now, the common factors can be found like this.
731:17x 43
543:3x 181
680:2x 2x 2x 5x 17
905:5x 181
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
5x 17x 181 = 15385
Therefore, the value for common factors is 15385.
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 = 244272568200/(1x15385)
LCM = 244272568200/15385
LCM = 15877320
Thus, we can understand that the LCM of 731,543,680,905 is 15877320.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 731, 543, 680, 905
1. What is the LCM of 731, 543, 680, 905?
Answer: LCM of 731, 543, 680, 905 is 15877320.
2. How to calculate the LCM of 731, 543, 680, 905?
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 731, 543, 680, 905.
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}.