LCM of 768, 685, 840, 822
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 768, 685, 840, 822 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 768, 685, 840, 822. So, keep reading to learn more.
Given numbers are 768,685,840,822
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 768,685,840,822 is 3682560.
Find LCM of 768,685,840,822 with Prime Factorization
| 2 | 768, 685, 840, 822 |
| 2 | 384, 685, 420, 411 |
| 2 | 192, 685, 210, 411 |
| 3 | 96, 685, 105, 411 |
| 5 | 32, 685, 35, 137 |
| 137 | 32, 137, 7, 137 |
| 32, 1, 7, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 5 x 137 x 32 x 1 x 7 x 1 = 3682560
Therefore, the lowest common multiple of 768,685,840,822 is 3682560.
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.
768 x 685 x 840 x 822 = 363247718400
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.
768 : 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 768
685 : 1, 5, 137, 685
840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
822 : 1, 2, 3, 6, 137, 274, 411, 822
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 768,685,840,822, is 1.
Now, the common factors can be found like this.
768:2x 2x 2x 2x 2x 2x 2x 2x 3
685:5x 137
840:2x 2x 2x 3x 5x 7
822:2x 3x 137
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 3x 3x 5x 137 = 98640
Therefore, the value for common factors is 98640.
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 = 363247718400/(1x98640)
LCM = 363247718400/98640
LCM = 3682560
Thus, we can understand that the LCM of 768,685,840,822 is 3682560.
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FAQs on LCM of 768, 685, 840, 822
1. What is the LCM of 768, 685, 840, 822?
Answer: LCM of 768, 685, 840, 822 is 3682560.
2. How to calculate the LCM of 768, 685, 840, 822?
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 768, 685, 840, 822.
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}.