LCM of 388, 646, 194, 647
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 388, 646, 194, 647 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 388, 646, 194, 647. So, keep reading to learn more.
Given numbers are 388,646,194,647
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 388,646,194,647 is 81084628.
Find LCM of 388,646,194,647 with Prime Factorization
| 2 | 388, 646, 194, 647 |
| 97 | 194, 323, 97, 647 |
| 2, 323, 1, 647 |
Multiply the prime numbers at the bottom and the left side.
2 x 97 x 2 x 323 x 1 x 647 = 81084628
Therefore, the lowest common multiple of 388,646,194,647 is 81084628.
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.
388 x 646 x 194 x 647 = 31460835664
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.
388 : 1, 2, 4, 97, 194, 388
646 : 1, 2, 17, 19, 34, 38, 323, 646
194 : 1, 2, 97, 194
647 : 1, 647
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 388,646,194,647, is 1.
Now, the common factors can be found like this.
388:2x 2x 97
646:2x 17x 19
194:2x 97
647:647
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2x 97 = 388
Therefore, the value for common factors is 388.
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 = 31460835664/(1x388)
LCM = 31460835664/388
LCM = 81084628
Thus, we can understand that the LCM of 388,646,194,647 is 81084628.
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FAQs on LCM of 388, 646, 194, 647
1. What is the LCM of 388, 646, 194, 647?
Answer: LCM of 388, 646, 194, 647 is 81084628.
2. How to calculate the LCM of 388, 646, 194, 647?
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 388, 646, 194, 647.
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}.