LCM of 561, 846, 540, 981
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 561, 846, 540, 981 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, 846, 540, 981. So, keep reading to learn more.
Given numbers are 561,846,540,981
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 561,846,540,981 is 517320540.
Find LCM of 561,846,540,981 with Prime Factorization
| 2 | 561, 846, 540, 981 |
| 3 | 561, 423, 270, 981 |
| 3 | 187, 141, 90, 327 |
| 187, 47, 30, 109 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 3 x 187 x 47 x 30 x 109 = 517320540
Therefore, the lowest common multiple of 561,846,540,981 is 517320540.
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 846 x 540 x 981 = 251417782440
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
846 : 1, 2, 3, 6, 9, 18, 47, 94, 141, 282, 423, 846
540 : 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540
981 : 1, 3, 9, 109, 327, 981
3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 561,846,540,981, is 3.
Now, the common factors can be found like this.
561:3x 11x 17
846:2x 3x 3x 47
540:2x 2x 3x 3x 3x 5
981:3x 3x 109
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 3x 3x 3 = 162
Therefore, the value for common factors is 162.
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 = 251417782440/(3x162)
LCM = 251417782440/486
LCM = 517320540
Thus, we can understand that the LCM of 561,846,540,981 is 517320540.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 561, 846, 540, 981
1. What is the LCM of 561, 846, 540, 981?
Answer: LCM of 561, 846, 540, 981 is 517320540.
2. How to calculate the LCM of 561, 846, 540, 981?
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, 846, 540, 981.
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}.