LCM of 394, 420, 812, 455
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 394, 420, 812, 455 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 394, 420, 812, 455. So, keep reading to learn more.
Given numbers are 394,420,812,455
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 394,420,812,455 is 31192980.
Find LCM of 394,420,812,455 with Prime Factorization
| 2 | 394, 420, 812, 455 |
| 2 | 197, 210, 406, 455 |
| 5 | 197, 105, 203, 455 |
| 7 | 197, 21, 203, 91 |
| 197, 3, 29, 13 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 7 x 197 x 3 x 29 x 13 = 31192980
Therefore, the lowest common multiple of 394,420,812,455 is 31192980.
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.
394 x 420 x 812 x 455 = 61138240800
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.
394 : 1, 2, 197, 394
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
812 : 1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812
455 : 1, 5, 7, 13, 35, 65, 91, 455
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 394,420,812,455, is 1.
Now, the common factors can be found like this.
394:2x 197
420:2x 2x 3x 5x 7
812:2x 2x 7x 29
455:5x 7x 13
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 5x 7x 7 = 1960
Therefore, the value for common factors is 1960.
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 = 61138240800/(1x1960)
LCM = 61138240800/1960
LCM = 31192980
Thus, we can understand that the LCM of 394,420,812,455 is 31192980.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 394, 420, 812, 455
1. What is the LCM of 394, 420, 812, 455?
Answer: LCM of 394, 420, 812, 455 is 31192980.
2. How to calculate the LCM of 394, 420, 812, 455?
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 394, 420, 812, 455.
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}.