LCM of 897, 815, 644, 978
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 897, 815, 644, 978 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 897, 815, 644, 978. So, keep reading to learn more.
Given numbers are 897,815,644,978
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 897,815,644,978 is 20469540.
Find LCM of 897,815,644,978 with Prime Factorization
| 2 | 897, 815, 644, 978 |
| 3 | 897, 815, 322, 489 |
| 23 | 299, 815, 322, 163 |
| 163 | 13, 815, 14, 163 |
| 13, 5, 14, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 23 x 163 x 13 x 5 x 14 x 1 = 20469540
Therefore, the lowest common multiple of 897,815,644,978 is 20469540.
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.
897 x 815 x 644 x 978 = 460441832760
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.
897 : 1, 3, 13, 23, 39, 69, 299, 897
815 : 1, 5, 163, 815
644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
978 : 1, 2, 3, 6, 163, 326, 489, 978
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 897,815,644,978, is 1.
Now, the common factors can be found like this.
897:3x 13x 23
815:5x 163
644:2x 2x 7x 23
978:2x 3x 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 3x 23x 163 = 22494
Therefore, the value for common factors is 22494.
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 = 460441832760/(1x22494)
LCM = 460441832760/22494
LCM = 20469540
Thus, we can understand that the LCM of 897,815,644,978 is 20469540.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 897, 815, 644, 978
1. What is the LCM of 897, 815, 644, 978?
Answer: LCM of 897, 815, 644, 978 is 20469540.
2. How to calculate the LCM of 897, 815, 644, 978?
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 897, 815, 644, 978.
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}.