LCM of 255, 691, 561, 399
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 255, 691, 561, 399 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 255, 691, 561, 399. So, keep reading to learn more.
Given numbers are 255,691,561,399
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 255,691,561,399 is 257787915.
Find LCM of 255,691,561,399 with Prime Factorization
| 3 | 255, 691, 561, 399 |
| 17 | 85, 691, 187, 133 |
| 5, 691, 11, 133 |
Multiply the prime numbers at the bottom and the left side.
3 x 17 x 5 x 691 x 11 x 133 = 257787915
Therefore, the lowest common multiple of 255,691,561,399 is 257787915.
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.
255 x 691 x 561 x 399 = 39441550995
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.
255 : 1, 3, 5, 15, 17, 51, 85, 255
691 : 1, 691
561 : 1, 3, 11, 17, 33, 51, 187, 561
399 : 1, 3, 7, 19, 21, 57, 133, 399
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 255,691,561,399, is 1.
Now, the common factors can be found like this.
255:3x 5x 17
691:691
561:3x 11x 17
399:3x 7x 19
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 = 39441550995/(1x153)
LCM = 39441550995/153
LCM = 257787915
Thus, we can understand that the LCM of 255,691,561,399 is 257787915.
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FAQs on LCM of 255, 691, 561, 399
1. What is the LCM of 255, 691, 561, 399?
Answer: LCM of 255, 691, 561, 399 is 257787915.
2. How to calculate the LCM of 255, 691, 561, 399?
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 255, 691, 561, 399.
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}.