LCM of 961, 861, 221, 217
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 961, 861, 221, 217 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, 861, 221, 217. So, keep reading to learn more.
Given numbers are 961,861,221,217
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 961,861,221,217 is 182860041.
Find LCM of 961,861,221,217 with Prime Factorization
| 7 | 961, 861, 221, 217 |
| 31 | 961, 123, 221, 31 |
| 1, 123, 221, 31 |
Multiply the prime numbers at the bottom and the left side.
7 x 31 x 1 x 123 x 221 x 31 = 182860041
Therefore, the lowest common multiple of 961,861,221,217 is 182860041.
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 861 x 221 x 217 = 39680628897
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
861 : 1, 3, 7, 21, 41, 123, 287, 861
221 : 1, 13, 17, 221
217 : 1, 7, 31, 217
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 961,861,221,217, is 1.
Now, the common factors can be found like this.
961:31x 31
861:3x 7x 41
221:13x 17
217:7x 31
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
7x 31 = 217
Therefore, the value for common factors is 217.
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 = 39680628897/(1x217)
LCM = 39680628897/217
LCM = 182860041
Thus, we can understand that the LCM of 961,861,221,217 is 182860041.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 961, 861, 221, 217
1. What is the LCM of 961, 861, 221, 217?
Answer: LCM of 961, 861, 221, 217 is 182860041.
2. How to calculate the LCM of 961, 861, 221, 217?
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, 861, 221, 217.
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}.