LCM of 700, 729, 840, 861
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 700, 729, 840, 861 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 700, 729, 840, 861. So, keep reading to learn more.
Given numbers are 700,729,840,861
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 700,729,840,861 is 41844600.
Find LCM of 700,729,840,861 with Prime Factorization
| 2 | 700, 729, 840, 861 |
| 2 | 350, 729, 420, 861 |
| 3 | 175, 729, 210, 861 |
| 5 | 175, 243, 70, 287 |
| 7 | 35, 243, 14, 287 |
| 5, 243, 2, 41 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 7 x 5 x 243 x 2 x 41 = 41844600
Therefore, the lowest common multiple of 700,729,840,861 is 41844600.
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.
700 x 729 x 840 x 861 = 369069372000
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.
700 : 1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700
729 : 1, 3, 9, 27, 81, 243, 729
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
861 : 1, 3, 7, 21, 41, 123, 287, 861
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 700,729,840,861, is 1.
Now, the common factors can be found like this.
700:2x 2x 5x 5x 7
729:3x 3x 3x 3x 3x 3
840:2x 2x 2x 3x 5x 7
861:3x 7x 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 3x 3x 5x 7x 7 = 8820
Therefore, the value for common factors is 8820.
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 = 369069372000/(1x8820)
LCM = 369069372000/8820
LCM = 41844600
Thus, we can understand that the LCM of 700,729,840,861 is 41844600.
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FAQs on LCM of 700, 729, 840, 861
1. What is the LCM of 700, 729, 840, 861?
Answer: LCM of 700, 729, 840, 861 is 41844600.
2. How to calculate the LCM of 700, 729, 840, 861?
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 700, 729, 840, 861.
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}.