LCM of 861, 315, 309, 117
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 861, 315, 309, 117 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 861, 315, 309, 117. So, keep reading to learn more.
Given numbers are 861,315,309,117
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 861,315,309,117 is 17293185.
Find LCM of 861,315,309,117 with Prime Factorization
| 3 | 861, 315, 309, 117 |
| 3 | 287, 105, 103, 39 |
| 7 | 287, 35, 103, 13 |
| 41, 5, 103, 13 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 7 x 41 x 5 x 103 x 13 = 17293185
Therefore, the lowest common multiple of 861,315,309,117 is 17293185.
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.
861 x 315 x 309 x 117 = 9805235895
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.
861 : 1, 3, 7, 21, 41, 123, 287, 861
315 : 1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315
309 : 1, 3, 103, 309
117 : 1, 3, 9, 13, 39, 117
3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 861,315,309,117, is 3.
Now, the common factors can be found like this.
861:3x 7x 41
315:3x 3x 5x 7
309:3x 103
117:3x 3x 13
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 3x 7 = 189
Therefore, the value for common factors is 189.
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 = 9805235895/(3x189)
LCM = 9805235895/567
LCM = 17293185
Thus, we can understand that the LCM of 861,315,309,117 is 17293185.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 861, 315, 309, 117
1. What is the LCM of 861, 315, 309, 117?
Answer: LCM of 861, 315, 309, 117 is 17293185.
2. How to calculate the LCM of 861, 315, 309, 117?
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 861, 315, 309, 117.
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}.