LCM of 491, 161, 989, 455
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 491, 161, 989, 455 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 491, 161, 989, 455. So, keep reading to learn more.
Given numbers are 491,161,989,455
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 491,161,989,455 is 220947545.
Find LCM of 491,161,989,455 with Prime Factorization
| 7 | 491, 161, 989, 455 |
| 23 | 491, 23, 989, 65 |
| 491, 1, 43, 65 |
Multiply the prime numbers at the bottom and the left side.
7 x 23 x 491 x 1 x 43 x 65 = 220947545
Therefore, the lowest common multiple of 491,161,989,455 is 220947545.
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.
491 x 161 x 989 x 455 = 35572554745
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.
491 : 1, 491
161 : 1, 7, 23, 161
989 : 1, 23, 43, 989
455 : 1, 5, 7, 13, 35, 65, 91, 455
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 491,161,989,455, is 1.
Now, the common factors can be found like this.
491:491
161:7x 23
989:23x 43
455:5x 7x 13
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
7x 23 = 161
Therefore, the value for common factors is 161.
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 = 35572554745/(1x161)
LCM = 35572554745/161
LCM = 220947545
Thus, we can understand that the LCM of 491,161,989,455 is 220947545.
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FAQs on LCM of 491, 161, 989, 455
1. What is the LCM of 491, 161, 989, 455?
Answer: LCM of 491, 161, 989, 455 is 220947545.
2. How to calculate the LCM of 491, 161, 989, 455?
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 491, 161, 989, 455.
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}.