LCM of 645, 494, 448, 247
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 645, 494, 448, 247 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 645, 494, 448, 247. So, keep reading to learn more.
Given numbers are 645,494,448,247
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 645,494,448,247 is 71373120.
Find LCM of 645,494,448,247 with Prime Factorization
| 2 | 645, 494, 448, 247 |
| 13 | 645, 247, 224, 247 |
| 19 | 645, 19, 224, 19 |
| 645, 1, 224, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 13 x 19 x 645 x 1 x 224 x 1 = 71373120
Therefore, the lowest common multiple of 645,494,448,247 is 71373120.
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.
645 x 494 x 448 x 247 = 35258321280
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.
645 : 1, 3, 5, 15, 43, 129, 215, 645
494 : 1, 2, 13, 19, 26, 38, 247, 494
448 : 1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 224, 448
247 : 1, 13, 19, 247
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 645,494,448,247, is 1.
Now, the common factors can be found like this.
645:3x 5x 43
494:2x 13x 19
448:2x 2x 2x 2x 2x 2x 7
247:13x 19
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 13x 19 = 494
Therefore, the value for common factors is 494.
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 = 35258321280/(1x494)
LCM = 35258321280/494
LCM = 71373120
Thus, we can understand that the LCM of 645,494,448,247 is 71373120.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 645, 494, 448, 247
1. What is the LCM of 645, 494, 448, 247?
Answer: LCM of 645, 494, 448, 247 is 71373120.
2. How to calculate the LCM of 645, 494, 448, 247?
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 645, 494, 448, 247.
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}.