LCM of 806, 805, 974, 764, 820
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 806, 805, 974, 764, 820 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 806, 805, 974, 764, 820. So, keep reading to learn more.
Given numbers are 806,805,974,764,820
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 806,805,974,764,820 is 4948882049020.
Find LCM of 806,805,974,764,820 with Prime Factorization
| 2 | 806, 805, 974, 764, 820 |
| 2 | 403, 805, 487, 382, 410 |
| 5 | 403, 805, 487, 191, 205 |
| 403, 161, 487, 191, 41 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 403 x 161 x 487 x 191 x 41 = 4948882049020
Therefore, the lowest common multiple of 806,805,974,764,820 is 4948882049020.
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.
806 x 805 x 974 x 764 x 820 = 395910563921600
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.
806 : 1, 2, 13, 26, 31, 62, 403, 806
805 : 1, 5, 7, 23, 35, 115, 161, 805
974 : 1, 2, 487, 974
764 : 1, 2, 4, 191, 382, 764
820 : 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 806,805,974,764,820, is 1.
Now, the common factors can be found like this.
806:2x 13x 31
805:5x 7x 23
974:2x 487
764:2x 2x 191
820:2x 2x 5x 41
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2x 2x 2x 5 = 80
Therefore, the value for common factors is 80.
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 = 395910563921600/(1x80)
LCM = 395910563921600/80
LCM = 4948882049020
Thus, we can understand that the LCM of 806,805,974,764,820 is 4948882049020.
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FAQs on LCM of 806, 805, 974, 764, 820
1. What is the LCM of 806, 805, 974, 764, 820?
Answer: LCM of 806, 805, 974, 764, 820 is 4948882049020.
2. How to calculate the LCM of 806, 805, 974, 764, 820?
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 806, 805, 974, 764, 820.
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}.