LCM of 961, 357, 731, 221, 987
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 961, 357, 731, 221, 987 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 961, 357, 731, 221, 987. So, keep reading to learn more.
Given numbers are 961,357,731,221,987
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 961,357,731,221,987 is 9013662021.
Find LCM of 961,357,731,221,987 with Prime Factorization
| 3 | 961, 357, 731, 221, 987 |
| 7 | 961, 119, 731, 221, 329 |
| 17 | 961, 17, 731, 221, 47 |
| 961, 1, 43, 13, 47 |
Multiply the prime numbers at the bottom and the left side.
3 x 7 x 17 x 961 x 1 x 43 x 13 x 47 = 9013662021
Therefore, the lowest common multiple of 961,357,731,221,987 is 9013662021.
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.
961 x 357 x 731 x 221 x 987 = 54703914805449
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.
961 : 1, 31, 961
357 : 1, 3, 7, 17, 21, 51, 119, 357
731 : 1, 17, 43, 731
221 : 1, 13, 17, 221
987 : 1, 3, 7, 21, 47, 141, 329, 987
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 961,357,731,221,987, is 1.
Now, the common factors can be found like this.
961:31x 31
357:3x 7x 17
731:17x 43
221:13x 17
987:3x 7x 47
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 7x 17x 17 = 6069
Therefore, the value for common factors is 6069.
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 = 54703914805449/(1x6069)
LCM = 54703914805449/6069
LCM = 9013662021
Thus, we can understand that the LCM of 961,357,731,221,987 is 9013662021.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 961, 357, 731, 221, 987
1. What is the LCM of 961, 357, 731, 221, 987?
Answer: LCM of 961, 357, 731, 221, 987 is 9013662021.
2. How to calculate the LCM of 961, 357, 731, 221, 987?
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 961, 357, 731, 221, 987.
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}.