LCM of 786, 385, 861, 520, 615
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 786, 385, 861, 520, 615 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 786, 385, 861, 520, 615. So, keep reading to learn more.
Given numbers are 786,385,861,520,615
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 786,385,861,520,615 is 645164520.
Find LCM of 786,385,861,520,615 with Prime Factorization
| 2 | 786, 385, 861, 520, 615 |
| 3 | 393, 385, 861, 260, 615 |
| 5 | 131, 385, 287, 260, 205 |
| 7 | 131, 77, 287, 52, 41 |
| 41 | 131, 11, 41, 52, 41 |
| 131, 11, 1, 52, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 7 x 41 x 131 x 11 x 1 x 52 x 1 = 645164520
Therefore, the lowest common multiple of 786,385,861,520,615 is 645164520.
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.
786 x 385 x 861 x 520 x 615 = 83322997758000
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.
786 : 1, 2, 3, 6, 131, 262, 393, 786
385 : 1, 5, 7, 11, 35, 55, 77, 385
861 : 1, 3, 7, 21, 41, 123, 287, 861
520 : 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520
615 : 1, 3, 5, 15, 41, 123, 205, 615
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 786,385,861,520,615, is 1.
Now, the common factors can be found like this.
786:2x 3x 131
385:5x 7x 11
861:3x 7x 41
520:2x 2x 2x 5x 13
615:3x 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 3x 3x 5x 5x 7x 41 = 129150
Therefore, the value for common factors is 129150.
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 = 83322997758000/(1x129150)
LCM = 83322997758000/129150
LCM = 645164520
Thus, we can understand that the LCM of 786,385,861,520,615 is 645164520.
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FAQs on LCM of 786, 385, 861, 520, 615
1. What is the LCM of 786, 385, 861, 520, 615?
Answer: LCM of 786, 385, 861, 520, 615 is 645164520.
2. How to calculate the LCM of 786, 385, 861, 520, 615?
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 786, 385, 861, 520, 615.
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}.