LCM of 128, 731, 344, 780, 618
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 128, 731, 344, 780, 618 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 128, 731, 344, 780, 618. So, keep reading to learn more.
Given numbers are 128,731,344,780,618
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 128,731,344,780,618 is 1879313280.
Find LCM of 128,731,344,780,618 with Prime Factorization
| 2 | 128, 731, 344, 780, 618 |
| 2 | 64, 731, 172, 390, 309 |
| 2 | 32, 731, 86, 195, 309 |
| 3 | 16, 731, 43, 195, 309 |
| 43 | 16, 731, 43, 65, 103 |
| 16, 17, 1, 65, 103 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 43 x 16 x 17 x 1 x 65 x 103 = 1879313280
Therefore, the lowest common multiple of 128,731,344,780,618 is 1879313280.
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.
128 x 731 x 344 x 780 x 618 = 15515610439680
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.
128 : 1, 2, 4, 8, 16, 32, 64, 128
731 : 1, 17, 43, 731
344 : 1, 2, 4, 8, 43, 86, 172, 344
780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
618 : 1, 2, 3, 6, 103, 206, 309, 618
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 128,731,344,780,618, is 1.
Now, the common factors can be found like this.
128:2x 2x 2x 2x 2x 2x 2
731:17x 43
344:2x 2x 2x 43
780:2x 2x 3x 5x 13
618:2x 3x 103
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 2x 2x 3x 43 = 8256
Therefore, the value for common factors is 8256.
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 = 15515610439680/(1x8256)
LCM = 15515610439680/8256
LCM = 1879313280
Thus, we can understand that the LCM of 128,731,344,780,618 is 1879313280.
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FAQs on LCM of 128, 731, 344, 780, 618
1. What is the LCM of 128, 731, 344, 780, 618?
Answer: LCM of 128, 731, 344, 780, 618 is 1879313280.
2. How to calculate the LCM of 128, 731, 344, 780, 618?
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 128, 731, 344, 780, 618.
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}.