LCM of 821, 756, 782, 851
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 821, 756, 782, 851 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 821, 756, 782, 851. So, keep reading to learn more.
Given numbers are 821,756,782,851
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 821,756,782,851 is 8979319692.
Find LCM of 821,756,782,851 with Prime Factorization
| 2 | 821, 756, 782, 851 |
| 23 | 821, 378, 391, 851 |
| 821, 378, 17, 37 |
Multiply the prime numbers at the bottom and the left side.
2 x 23 x 821 x 378 x 17 x 37 = 8979319692
Therefore, the lowest common multiple of 821,756,782,851 is 8979319692.
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.
821 x 756 x 782 x 851 = 413048705832
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.
821 : 1, 821
756 : 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756
782 : 1, 2, 17, 23, 34, 46, 391, 782
851 : 1, 23, 37, 851
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 821,756,782,851, is 1.
Now, the common factors can be found like this.
821:821
756:2x 2x 3x 3x 3x 7
782:2x 17x 23
851:23x 37
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 23 = 46
Therefore, the value for common factors is 46.
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 = 413048705832/(1x46)
LCM = 413048705832/46
LCM = 8979319692
Thus, we can understand that the LCM of 821,756,782,851 is 8979319692.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 821, 756, 782, 851
1. What is the LCM of 821, 756, 782, 851?
Answer: LCM of 821, 756, 782, 851 is 8979319692.
2. How to calculate the LCM of 821, 756, 782, 851?
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 821, 756, 782, 851.
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}.