LCM of 831, 855, 210, 798
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 831, 855, 210, 798 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, 855, 210, 798. So, keep reading to learn more.
Given numbers are 831,855,210,798
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 831,855,210,798 is 3315690.
Find LCM of 831,855,210,798 with Prime Factorization
| 2 | 831, 855, 210, 798 |
| 3 | 831, 855, 105, 399 |
| 5 | 277, 285, 35, 133 |
| 7 | 277, 57, 7, 133 |
| 19 | 277, 57, 1, 19 |
| 277, 3, 1, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 7 x 19 x 277 x 3 x 1 x 1 = 3315690
Therefore, the lowest common multiple of 831,855,210,798 is 3315690.
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 855 x 210 x 798 = 119066427900
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
855 : 1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855
210 : 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210
798 : 1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 798
3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 831,855,210,798, is 3.
Now, the common factors can be found like this.
831:3x 277
855:3x 3x 5x 19
210:2x 3x 5x 7
798:2x 3x 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 3x 3x 5x 7x 19 = 11970
Therefore, the value for common factors is 11970.
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 = 119066427900/(3x11970)
LCM = 119066427900/35910
LCM = 3315690
Thus, we can understand that the LCM of 831,855,210,798 is 3315690.
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FAQs on LCM of 831, 855, 210, 798
1. What is the LCM of 831, 855, 210, 798?
Answer: LCM of 831, 855, 210, 798 is 3315690.
2. How to calculate the LCM of 831, 855, 210, 798?
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, 855, 210, 798.
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}.