LCM of 640, 784, 196, 740, 800
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 640, 784, 196, 740, 800 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 640, 784, 196, 740, 800. So, keep reading to learn more.
Given numbers are 640,784,196,740,800
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 640,784,196,740,800 is 5801600.
Find LCM of 640,784,196,740,800 with Prime Factorization
| 2 | 640, 784, 196, 740, 800 |
| 2 | 320, 392, 98, 370, 400 |
| 2 | 160, 196, 49, 185, 200 |
| 2 | 80, 98, 49, 185, 100 |
| 2 | 40, 49, 49, 185, 50 |
| 5 | 20, 49, 49, 185, 25 |
| 7 | 4, 49, 49, 37, 5 |
| 7 | 4, 7, 7, 37, 5 |
| 4, 1, 1, 37, 5 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 2 x 5 x 7 x 7 x 4 x 1 x 1 x 37 x 5 = 5801600
Therefore, the lowest common multiple of 640,784,196,740,800 is 5801600.
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.
640 x 784 x 196 x 740 x 800 = 58220216320000
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.
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
784 : 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784
196 : 1, 2, 4, 7, 14, 28, 49, 98, 196
740 : 1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740
800 : 1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800
4 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 640,784,196,740,800, is 4.
Now, the common factors can be found like this.
640:2x 2x 2x 2x 2x 2x 2x 5
784:2x 2x 2x 2x 7x 7
196:2x 2x 7x 7
740:2x 2x 5x 37
800:2x 2x 2x 2x 2x 5x 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 2x 2x 2x 2x 2x 2x 2x 2x 2x 5x 5x 7x 7 = 2508800
Therefore, the value for common factors is 2508800.
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 = 58220216320000/(4x2508800)
LCM = 58220216320000/10035200
LCM = 5801600
Thus, we can understand that the LCM of 640,784,196,740,800 is 5801600.
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FAQs on LCM of 640, 784, 196, 740, 800
1. What is the LCM of 640, 784, 196, 740, 800?
Answer: LCM of 640, 784, 196, 740, 800 is 5801600.
2. How to calculate the LCM of 640, 784, 196, 740, 800?
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 640, 784, 196, 740, 800.
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}.