LCM of 561, 385, 646, 268
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 561, 385, 646, 268 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, 385, 646, 268. So, keep reading to learn more.
Given numbers are 561,385,646,268
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 561,385,646,268 is 99981420.
Find LCM of 561,385,646,268 with Prime Factorization
| 2 | 561, 385, 646, 268 |
| 11 | 561, 385, 323, 134 |
| 17 | 51, 35, 323, 134 |
| 3, 35, 19, 134 |
Multiply the prime numbers at the bottom and the left side.
2 x 11 x 17 x 3 x 35 x 19 x 134 = 99981420
Therefore, the lowest common multiple of 561,385,646,268 is 99981420.
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 385 x 646 x 268 = 37393051080
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
385 : 1, 5, 7, 11, 35, 55, 77, 385
646 : 1, 2, 17, 19, 34, 38, 323, 646
268 : 1, 2, 4, 67, 134, 268
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 561,385,646,268, is 1.
Now, the common factors can be found like this.
561:3x 11x 17
385:5x 7x 11
646:2x 17x 19
268:2x 2x 67
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 11x 17 = 374
Therefore, the value for common factors is 374.
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 = 37393051080/(1x374)
LCM = 37393051080/374
LCM = 99981420
Thus, we can understand that the LCM of 561,385,646,268 is 99981420.
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FAQs on LCM of 561, 385, 646, 268
1. What is the LCM of 561, 385, 646, 268?
Answer: LCM of 561, 385, 646, 268 is 99981420.
2. How to calculate the LCM of 561, 385, 646, 268?
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, 385, 646, 268.
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}.