LCM of 838, 774, 800, 640
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 838, 774, 800, 640 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 838, 774, 800, 640. So, keep reading to learn more.
Given numbers are 838,774,800,640
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 838,774,800,640 is 518889600.
Find LCM of 838,774,800,640 with Prime Factorization
| 2 | 838, 774, 800, 640 |
| 2 | 419, 387, 400, 320 |
| 2 | 419, 387, 200, 160 |
| 2 | 419, 387, 100, 80 |
| 2 | 419, 387, 50, 40 |
| 5 | 419, 387, 25, 20 |
| 419, 387, 5, 4 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 2 x 5 x 419 x 387 x 5 x 4 = 518889600
Therefore, the lowest common multiple of 838,774,800,640 is 518889600.
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.
838 x 774 x 800 x 640 = 332089344000
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.
838 : 1, 2, 419, 838
774 : 1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 774
800 : 1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 838,774,800,640, is 2.
Now, the common factors can be found like this.
838:2x 419
774:2x 3x 3x 43
800:2x 2x 2x 2x 2x 5x 5
640:2x 2x 2x 2x 2x 2x 2x 5
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 2x 2x 5 = 320
Therefore, the value for common factors is 320.
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 = 332089344000/(2x320)
LCM = 332089344000/640
LCM = 518889600
Thus, we can understand that the LCM of 838,774,800,640 is 518889600.
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FAQs on LCM of 838, 774, 800, 640
1. What is the LCM of 838, 774, 800, 640?
Answer: LCM of 838, 774, 800, 640 is 518889600.
2. How to calculate the LCM of 838, 774, 800, 640?
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 838, 774, 800, 640.
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}.