LCM of 749, 646, 405, 171, 256
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 749, 646, 405, 171, 256 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 749, 646, 405, 171, 256. So, keep reading to learn more.
Given numbers are 749,646,405,171,256
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 749,646,405,171,256 is 25082991360.
Find LCM of 749,646,405,171,256 with Prime Factorization
| 2 | 749, 646, 405, 171, 256 |
| 3 | 749, 323, 405, 171, 128 |
| 3 | 749, 323, 135, 57, 128 |
| 19 | 749, 323, 45, 19, 128 |
| 749, 17, 45, 1, 128 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 3 x 19 x 749 x 17 x 45 x 1 x 128 = 25082991360
Therefore, the lowest common multiple of 749,646,405,171,256 is 25082991360.
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.
749 x 646 x 405 x 171 x 256 = 8578383045120
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.
749 : 1, 7, 107, 749
646 : 1, 2, 17, 19, 34, 38, 323, 646
405 : 1, 3, 5, 9, 15, 27, 45, 81, 135, 405
171 : 1, 3, 9, 19, 57, 171
256 : 1, 2, 4, 8, 16, 32, 64, 128, 256
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 749,646,405,171,256, is 1.
Now, the common factors can be found like this.
749:7x 107
646:2x 17x 19
405:3x 3x 3x 3x 5
171:3x 3x 19
256:2x 2x 2x 2x 2x 2x 2x 2
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 19 = 342
Therefore, the value for common factors is 342.
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 = 8578383045120/(1x342)
LCM = 8578383045120/342
LCM = 25082991360
Thus, we can understand that the LCM of 749,646,405,171,256 is 25082991360.
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FAQs on LCM of 749, 646, 405, 171, 256
1. What is the LCM of 749, 646, 405, 171, 256?
Answer: LCM of 749, 646, 405, 171, 256 is 25082991360.
2. How to calculate the LCM of 749, 646, 405, 171, 256?
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 749, 646, 405, 171, 256.
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}.