LCM of 909, 656, 640, 931
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 909, 656, 640, 931 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 909, 656, 640, 931. So, keep reading to learn more.
Given numbers are 909,656,640,931
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 909,656,640,931 is 22206360960.
Find LCM of 909,656,640,931 with Prime Factorization
| 2 | 909, 656, 640, 931 |
| 2 | 909, 328, 320, 931 |
| 2 | 909, 164, 160, 931 |
| 2 | 909, 82, 80, 931 |
| 909, 41, 40, 931 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 909 x 41 x 40 x 931 = 22206360960
Therefore, the lowest common multiple of 909,656,640,931 is 22206360960.
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.
909 x 656 x 640 x 931 = 355301775360
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.
909 : 1, 3, 9, 101, 303, 909
656 : 1, 2, 4, 8, 16, 41, 82, 164, 328, 656
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
931 : 1, 7, 19, 49, 133, 931
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 909,656,640,931, is 1.
Now, the common factors can be found like this.
909:3x 3x 101
656:2x 2x 2x 2x 41
640:2x 2x 2x 2x 2x 2x 2x 5
931:7x 7x 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 2x 2x 2 = 16
Therefore, the value for common factors is 16.
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 = 355301775360/(1x16)
LCM = 355301775360/16
LCM = 22206360960
Thus, we can understand that the LCM of 909,656,640,931 is 22206360960.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 909, 656, 640, 931
1. What is the LCM of 909, 656, 640, 931?
Answer: LCM of 909, 656, 640, 931 is 22206360960.
2. How to calculate the LCM of 909, 656, 640, 931?
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 909, 656, 640, 931.
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}.