LCM of 561, 816, 849, 861
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 561, 816, 849, 861 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 561, 816, 849, 861. So, keep reading to learn more.
Given numbers are 561,816,849,861
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 561,816,849,861 is 729039696.
Find LCM of 561,816,849,861 with Prime Factorization
| 3 | 561, 816, 849, 861 |
| 17 | 187, 272, 283, 287 |
| 11, 16, 283, 287 |
Multiply the prime numbers at the bottom and the left side.
3 x 17 x 11 x 16 x 283 x 287 = 729039696
Therefore, the lowest common multiple of 561,816,849,861 is 729039696.
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.
561 x 816 x 849 x 861 = 334629220464
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.
561 : 1, 3, 11, 17, 33, 51, 187, 561
816 : 1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816
849 : 1, 3, 283, 849
861 : 1, 3, 7, 21, 41, 123, 287, 861
3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 561,816,849,861, is 3.
Now, the common factors can be found like this.
561:3x 11x 17
816:2x 2x 2x 2x 3x 17
849:3x 283
861:3x 7x 41
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 17 = 153
Therefore, the value for common factors is 153.
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 = 334629220464/(3x153)
LCM = 334629220464/459
LCM = 729039696
Thus, we can understand that the LCM of 561,816,849,861 is 729039696.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 561, 816, 849, 861
1. What is the LCM of 561, 816, 849, 861?
Answer: LCM of 561, 816, 849, 861 is 729039696.
2. How to calculate the LCM of 561, 816, 849, 861?
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 561, 816, 849, 861.
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}.