LCM of 925, 640, 978, 815
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 925, 640, 978, 815 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 925, 640, 978, 815. So, keep reading to learn more.
Given numbers are 925,640,978,815
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 925,640,978,815 is 57897600.
Find LCM of 925,640,978,815 with Prime Factorization
| 2 | 925, 640, 978, 815 |
| 5 | 925, 320, 489, 815 |
| 163 | 185, 64, 489, 163 |
| 185, 64, 3, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 163 x 185 x 64 x 3 x 1 = 57897600
Therefore, the lowest common multiple of 925,640,978,815 is 57897600.
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.
925 x 640 x 978 x 815 = 471865440000
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.
925 : 1, 5, 25, 37, 185, 925
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
978 : 1, 2, 3, 6, 163, 326, 489, 978
815 : 1, 5, 163, 815
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 925,640,978,815, is 1.
Now, the common factors can be found like this.
925:5x 5x 37
640:2x 2x 2x 2x 2x 2x 2x 5
978:2x 3x 163
815:5x 163
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 5x 5x 163 = 8150
Therefore, the value for common factors is 8150.
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 = 471865440000/(1x8150)
LCM = 471865440000/8150
LCM = 57897600
Thus, we can understand that the LCM of 925,640,978,815 is 57897600.
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FAQs on LCM of 925, 640, 978, 815
1. What is the LCM of 925, 640, 978, 815?
Answer: LCM of 925, 640, 978, 815 is 57897600.
2. How to calculate the LCM of 925, 640, 978, 815?
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 925, 640, 978, 815.
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}.