LCM of 615, 831, 749, 645, 387
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 615, 831, 749, 645, 387 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 615, 831, 749, 645, 387. So, keep reading to learn more.
Given numbers are 615,831,749,645,387
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 615,831,749,645,387 is 16459870455.
Find LCM of 615,831,749,645,387 with Prime Factorization
| 3 | 615, 831, 749, 645, 387 |
| 5 | 205, 277, 749, 215, 129 |
| 43 | 41, 277, 749, 43, 129 |
| 41, 277, 749, 1, 3 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 43 x 41 x 277 x 749 x 1 x 3 = 16459870455
Therefore, the lowest common multiple of 615,831,749,645,387 is 16459870455.
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.
615 x 831 x 749 x 645 x 387 = 95549547991275
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.
615 : 1, 3, 5, 15, 41, 123, 205, 615
831 : 1, 3, 277, 831
749 : 1, 7, 107, 749
645 : 1, 3, 5, 15, 43, 129, 215, 645
387 : 1, 3, 9, 43, 129, 387
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 615,831,749,645,387, is 1.
Now, the common factors can be found like this.
615:3x 5x 41
831:3x 277
749:7x 107
645:3x 5x 43
387:3x 3x 43
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 3x 5x 43 = 5805
Therefore, the value for common factors is 5805.
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 = 95549547991275/(1x5805)
LCM = 95549547991275/5805
LCM = 16459870455
Thus, we can understand that the LCM of 615,831,749,645,387 is 16459870455.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 615, 831, 749, 645, 387
1. What is the LCM of 615, 831, 749, 645, 387?
Answer: LCM of 615, 831, 749, 645, 387 is 16459870455.
2. How to calculate the LCM of 615, 831, 749, 645, 387?
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 615, 831, 749, 645, 387.
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}.