LCM of 621, 561, 381, 342
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 621, 561, 381, 342 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 621, 561, 381, 342. So, keep reading to learn more.
Given numbers are 621,561,381,342
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 621,561,381,342 is 560428902.
Find LCM of 621,561,381,342 with Prime Factorization
| 3 | 621, 561, 381, 342 |
| 3 | 207, 187, 127, 114 |
| 69, 187, 127, 38 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 69 x 187 x 127 x 38 = 560428902
Therefore, the lowest common multiple of 621,561,381,342 is 560428902.
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.
621 x 561 x 381 x 342 = 45394741062
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.
621 : 1, 3, 9, 23, 27, 69, 207, 621
561 : 1, 3, 11, 17, 33, 51, 187, 561
381 : 1, 3, 127, 381
342 : 1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342
3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 621,561,381,342, is 3.
Now, the common factors can be found like this.
621:3x 3x 3x 23
561:3x 11x 17
381:3x 127
342:2x 3x 3x 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 3 = 27
Therefore, the value for common factors is 27.
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 = 45394741062/(3x27)
LCM = 45394741062/81
LCM = 560428902
Thus, we can understand that the LCM of 621,561,381,342 is 560428902.
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FAQs on LCM of 621, 561, 381, 342
1. What is the LCM of 621, 561, 381, 342?
Answer: LCM of 621, 561, 381, 342 is 560428902.
2. How to calculate the LCM of 621, 561, 381, 342?
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 621, 561, 381, 342.
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}.