LCM of 130, 280, 642, 399, 991
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 130, 280, 642, 399, 991 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 130, 280, 642, 399, 991. So, keep reading to learn more.
Given numbers are 130,280,642,399,991
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 130,280,642,399,991 is 22000556760.
Find LCM of 130,280,642,399,991 with Prime Factorization
| 2 | 130, 280, 642, 399, 991 |
| 3 | 65, 140, 321, 399, 991 |
| 5 | 65, 140, 107, 133, 991 |
| 7 | 13, 28, 107, 133, 991 |
| 13, 4, 107, 19, 991 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 7 x 13 x 4 x 107 x 19 x 991 = 22000556760
Therefore, the lowest common multiple of 130,280,642,399,991 is 22000556760.
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.
130 x 280 x 642 x 399 x 991 = 9240233839200
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.
130 : 1, 2, 5, 10, 13, 26, 65, 130
280 : 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280
642 : 1, 2, 3, 6, 107, 214, 321, 642
399 : 1, 3, 7, 19, 21, 57, 133, 399
991 : 1, 991
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 130,280,642,399,991, is 1.
Now, the common factors can be found like this.
130:2x 5x 13
280:2x 2x 2x 5x 7
642:2x 3x 107
399:3x 7x 19
991:991
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 3x 5x 7 = 420
Therefore, the value for common factors is 420.
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 = 9240233839200/(1x420)
LCM = 9240233839200/420
LCM = 22000556760
Thus, we can understand that the LCM of 130,280,642,399,991 is 22000556760.
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FAQs on LCM of 130, 280, 642, 399, 991
1. What is the LCM of 130, 280, 642, 399, 991?
Answer: LCM of 130, 280, 642, 399, 991 is 22000556760.
2. How to calculate the LCM of 130, 280, 642, 399, 991?
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 130, 280, 642, 399, 991.
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}.