LCM of 784, 856, 978, 800
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 784, 856, 978, 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 784, 856, 978, 800. So, keep reading to learn more.
Given numbers are 784,856,978,800
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 784,856,978,800 is 2051061600.
Find LCM of 784,856,978,800 with Prime Factorization
| 2 | 784, 856, 978, 800 |
| 2 | 392, 428, 489, 400 |
| 2 | 196, 214, 489, 200 |
| 2 | 98, 107, 489, 100 |
| 49, 107, 489, 50 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 49 x 107 x 489 x 50 = 2051061600
Therefore, the lowest common multiple of 784,856,978,800 is 2051061600.
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.
784 x 856 x 978 x 800 = 525071769600
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.
784 : 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784
856 : 1, 2, 4, 8, 107, 214, 428, 856
978 : 1, 2, 3, 6, 163, 326, 489, 978
800 : 1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 784,856,978,800, is 2.
Now, the common factors can be found like this.
784:2x 2x 2x 2x 7x 7
856:2x 2x 2x 107
978:2x 3x 163
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 2 = 128
Therefore, the value for common factors is 128.
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 = 525071769600/(2x128)
LCM = 525071769600/256
LCM = 2051061600
Thus, we can understand that the LCM of 784,856,978,800 is 2051061600.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 784, 856, 978, 800
1. What is the LCM of 784, 856, 978, 800?
Answer: LCM of 784, 856, 978, 800 is 2051061600.
2. How to calculate the LCM of 784, 856, 978, 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 784, 856, 978, 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}.