LCM of 215, 561, 315, 917
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 215, 561, 315, 917 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 215, 561, 315, 917. So, keep reading to learn more.
Given numbers are 215,561,315,917
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 215,561,315,917 is 331811865.
Find LCM of 215,561,315,917 with Prime Factorization
| 3 | 215, 561, 315, 917 |
| 5 | 215, 187, 105, 917 |
| 7 | 43, 187, 21, 917 |
| 43, 187, 3, 131 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 7 x 43 x 187 x 3 x 131 = 331811865
Therefore, the lowest common multiple of 215,561,315,917 is 331811865.
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.
215 x 561 x 315 x 917 = 34840245825
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.
215 : 1, 5, 43, 215
561 : 1, 3, 11, 17, 33, 51, 187, 561
315 : 1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315
917 : 1, 7, 131, 917
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 215,561,315,917, is 1.
Now, the common factors can be found like this.
215:5x 43
561:3x 11x 17
315:3x 3x 5x 7
917:7x 131
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 5x 7 = 105
Therefore, the value for common factors is 105.
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 = 34840245825/(1x105)
LCM = 34840245825/105
LCM = 331811865
Thus, we can understand that the LCM of 215,561,315,917 is 331811865.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 215, 561, 315, 917
1. What is the LCM of 215, 561, 315, 917?
Answer: LCM of 215, 561, 315, 917 is 331811865.
2. How to calculate the LCM of 215, 561, 315, 917?
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 215, 561, 315, 917.
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}.