LCM of 388, 447, 315, 685, 640
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 388, 447, 315, 685, 640 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, 447, 315, 685, 640. So, keep reading to learn more.
Given numbers are 388,447,315,685,640
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 388,447,315,685,640 is 79836059520.
Find LCM of 388,447,315,685,640 with Prime Factorization
| 2 | 388, 447, 315, 685, 640 |
| 2 | 194, 447, 315, 685, 320 |
| 3 | 97, 447, 315, 685, 160 |
| 5 | 97, 149, 105, 685, 160 |
| 97, 149, 21, 137, 32 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 97 x 149 x 21 x 137 x 32 = 79836059520
Therefore, the lowest common multiple of 388,447,315,685,640 is 79836059520.
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 447 x 315 x 685 x 640 = 23950817856000
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
447 : 1, 3, 149, 447
315 : 1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315
685 : 1, 5, 137, 685
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 388,447,315,685,640, is 1.
Now, the common factors can be found like this.
388:2x 2x 97
447:3x 149
315:3x 3x 5x 7
685:5x 137
640:2x 2x 2x 2x 2x 2x 2x 5
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 3x 5x 5 = 300
Therefore, the value for common factors is 300.
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 = 23950817856000/(1x300)
LCM = 23950817856000/300
LCM = 79836059520
Thus, we can understand that the LCM of 388,447,315,685,640 is 79836059520.
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FAQs on LCM of 388, 447, 315, 685, 640
1. What is the LCM of 388, 447, 315, 685, 640?
Answer: LCM of 388, 447, 315, 685, 640 is 79836059520.
2. How to calculate the LCM of 388, 447, 315, 685, 640?
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, 447, 315, 685, 640.
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}.