LCM of 831, 400, 785, 917
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 831, 400, 785, 917 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 831, 400, 785, 917. So, keep reading to learn more.
Given numbers are 831,400,785,917
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 831,400,785,917 is 47855295600.
Find LCM of 831,400,785,917 with Prime Factorization
| 5 | 831, 400, 785, 917 |
| 831, 80, 157, 917 |
Multiply the prime numbers at the bottom and the left side.
5 x 831 x 80 x 157 x 917 = 47855295600
Therefore, the lowest common multiple of 831,400,785,917 is 47855295600.
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.
831 x 400 x 785 x 917 = 239276478000
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.
831 : 1, 3, 277, 831
400 : 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400
785 : 1, 5, 157, 785
917 : 1, 7, 131, 917
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 831,400,785,917, is 1.
Now, the common factors can be found like this.
831:3x 277
400:2x 2x 2x 2x 5x 5
785:5x 157
917:7x 131
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
5 = 5
Therefore, the value for common factors is 5.
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 = 239276478000/(1x5)
LCM = 239276478000/5
LCM = 47855295600
Thus, we can understand that the LCM of 831,400,785,917 is 47855295600.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 831, 400, 785, 917
1. What is the LCM of 831, 400, 785, 917?
Answer: LCM of 831, 400, 785, 917 is 47855295600.
2. How to calculate the LCM of 831, 400, 785, 917?
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 831, 400, 785, 917.
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}.