LCM of 674, 646, 868, 784
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 674, 646, 868, 784 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 674, 646, 868, 784. So, keep reading to learn more.
Given numbers are 674,646,868,784
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 674,646,868,784 is 2645514704.
Find LCM of 674,646,868,784 with Prime Factorization
| 2 | 674, 646, 868, 784 |
| 2 | 337, 323, 434, 392 |
| 7 | 337, 323, 217, 196 |
| 337, 323, 31, 28 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 7 x 337 x 323 x 31 x 28 = 2645514704
Therefore, the lowest common multiple of 674,646,868,784 is 2645514704.
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.
674 x 646 x 868 x 784 = 296297646848
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.
674 : 1, 2, 337, 674
646 : 1, 2, 17, 19, 34, 38, 323, 646
868 : 1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868
784 : 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 674,646,868,784, is 2.
Now, the common factors can be found like this.
674:2x 337
646:2x 17x 19
868:2x 2x 7x 31
784:2x 2x 2x 2x 7x 7
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 7 = 56
Therefore, the value for common factors is 56.
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 = 296297646848/(2x56)
LCM = 296297646848/112
LCM = 2645514704
Thus, we can understand that the LCM of 674,646,868,784 is 2645514704.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 674, 646, 868, 784
1. What is the LCM of 674, 646, 868, 784?
Answer: LCM of 674, 646, 868, 784 is 2645514704.
2. How to calculate the LCM of 674, 646, 868, 784?
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 674, 646, 868, 784.
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}.