LCM of 810, 901, 680, 840
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 810, 901, 680, 840 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 810, 901, 680, 840. So, keep reading to learn more.
Given numbers are 810,901,680,840
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 810,901,680,840 is 20434680.
Find LCM of 810,901,680,840 with Prime Factorization
| 2 | 810, 901, 680, 840 |
| 2 | 405, 901, 340, 420 |
| 2 | 405, 901, 170, 210 |
| 3 | 405, 901, 85, 105 |
| 5 | 135, 901, 85, 35 |
| 17 | 27, 901, 17, 7 |
| 27, 53, 1, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 5 x 17 x 27 x 53 x 1 x 7 = 20434680
Therefore, the lowest common multiple of 810,901,680,840 is 20434680.
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.
810 x 901 x 680 x 840 = 416867472000
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.
810 : 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810
901 : 1, 17, 53, 901
680 : 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 810,901,680,840, is 1.
Now, the common factors can be found like this.
810:2x 3x 3x 3x 3x 5
901:17x 53
680:2x 2x 2x 5x 17
840:2x 2x 2x 3x 5x 7
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 3x 5x 5x 17 = 20400
Therefore, the value for common factors is 20400.
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 = 416867472000/(1x20400)
LCM = 416867472000/20400
LCM = 20434680
Thus, we can understand that the LCM of 810,901,680,840 is 20434680.
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FAQs on LCM of 810, 901, 680, 840
1. What is the LCM of 810, 901, 680, 840?
Answer: LCM of 810, 901, 680, 840 is 20434680.
2. How to calculate the LCM of 810, 901, 680, 840?
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 810, 901, 680, 840.
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}.