LCM of 308, 420, 394, 144
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 308, 420, 394, 144 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 308, 420, 394, 144. So, keep reading to learn more.
Given numbers are 308,420,394,144
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 308,420,394,144 is 10921680.
Find LCM of 308,420,394,144 with Prime Factorization
| 2 | 308, 420, 394, 144 |
| 2 | 154, 210, 197, 72 |
| 3 | 77, 105, 197, 36 |
| 7 | 77, 35, 197, 12 |
| 11, 5, 197, 12 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 7 x 11 x 5 x 197 x 12 = 10921680
Therefore, the lowest common multiple of 308,420,394,144 is 10921680.
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.
308 x 420 x 394 x 144 = 7339368960
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.
308 : 1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308
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
394 : 1, 2, 197, 394
144 : 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 308,420,394,144, is 2.
Now, the common factors can be found like this.
308:2x 2x 7x 11
420:2x 2x 3x 5x 7
394:2x 197
144:2x 2x 2x 2x 3x 3
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 7 = 336
Therefore, the value for common factors is 336.
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 = 7339368960/(2x336)
LCM = 7339368960/672
LCM = 10921680
Thus, we can understand that the LCM of 308,420,394,144 is 10921680.
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FAQs on LCM of 308, 420, 394, 144
1. What is the LCM of 308, 420, 394, 144?
Answer: LCM of 308, 420, 394, 144 is 10921680.
2. How to calculate the LCM of 308, 420, 394, 144?
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 308, 420, 394, 144.
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}.