LCM of 205, 385, 947, 399, 647
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 205, 385, 947, 399, 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 205, 385, 947, 399, 647. So, keep reading to learn more.
Given numbers are 205,385,947,399,647
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 205,385,947,399,647 is 551281859205.
Find LCM of 205,385,947,399,647 with Prime Factorization
| 5 | 205, 385, 947, 399, 647 |
| 7 | 41, 77, 947, 399, 647 |
| 41, 11, 947, 57, 647 |
Multiply the prime numbers at the bottom and the left side.
5 x 7 x 41 x 11 x 947 x 57 x 647 = 551281859205
Therefore, the lowest common multiple of 205,385,947,399,647 is 551281859205.
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.
205 x 385 x 947 x 399 x 647 = 19294865072175
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.
205 : 1, 5, 41, 205
385 : 1, 5, 7, 11, 35, 55, 77, 385
947 : 1, 947
399 : 1, 3, 7, 19, 21, 57, 133, 399
647 : 1, 647
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 205,385,947,399,647, is 1.
Now, the common factors can be found like this.
205:5x 41
385:5x 7x 11
947:947
399:3x 7x 19
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.
5x 7 = 35
Therefore, the value for common factors is 35.
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 = 19294865072175/(1x35)
LCM = 19294865072175/35
LCM = 551281859205
Thus, we can understand that the LCM of 205,385,947,399,647 is 551281859205.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 205, 385, 947, 399, 647
1. What is the LCM of 205, 385, 947, 399, 647?
Answer: LCM of 205, 385, 947, 399, 647 is 551281859205.
2. How to calculate the LCM of 205, 385, 947, 399, 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 205, 385, 947, 399, 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}.