LCM of 680, 991, 389, 404, 561
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 680, 991, 389, 404, 561 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, 991, 389, 404, 561. So, keep reading to learn more.
Given numbers are 680,991,389,404,561
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 680,991,389,404,561 is 873710353560.
Find LCM of 680,991,389,404,561 with Prime Factorization
| 2 | 680, 991, 389, 404, 561 |
| 2 | 340, 991, 389, 202, 561 |
| 17 | 170, 991, 389, 101, 561 |
| 10, 991, 389, 101, 33 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 17 x 10 x 991 x 389 x 101 x 33 = 873710353560
Therefore, the lowest common multiple of 680,991,389,404,561 is 873710353560.
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 991 x 389 x 404 x 561 = 59412304042080
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
991 : 1, 991
389 : 1, 389
404 : 1, 2, 4, 101, 202, 404
561 : 1, 3, 11, 17, 33, 51, 187, 561
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 680,991,389,404,561, is 1.
Now, the common factors can be found like this.
680:2x 2x 2x 5x 17
991:991
389:389
404:2x 2x 101
561:3x 11x 17
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 17 = 68
Therefore, the value for common factors is 68.
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 = 59412304042080/(1x68)
LCM = 59412304042080/68
LCM = 873710353560
Thus, we can understand that the LCM of 680,991,389,404,561 is 873710353560.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 680, 991, 389, 404, 561
1. What is the LCM of 680, 991, 389, 404, 561?
Answer: LCM of 680, 991, 389, 404, 561 is 873710353560.
2. How to calculate the LCM of 680, 991, 389, 404, 561?
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, 991, 389, 404, 561.
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}.