LCM of 728, 991, 136, 168
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 728, 991, 136, 168 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 728, 991, 136, 168. So, keep reading to learn more.
Given numbers are 728,991,136,168
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 728,991,136,168 is 36793848.
Find LCM of 728,991,136,168 with Prime Factorization
| 2 | 728, 991, 136, 168 |
| 2 | 364, 991, 68, 84 |
| 2 | 182, 991, 34, 42 |
| 7 | 91, 991, 17, 21 |
| 13, 991, 17, 3 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 7 x 13 x 991 x 17 x 3 = 36793848
Therefore, the lowest common multiple of 728,991,136,168 is 36793848.
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.
728 x 991 x 136 x 168 = 16483643904
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.
728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
991 : 1, 991
136 : 1, 2, 4, 8, 17, 34, 68, 136
168 : 1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 728,991,136,168, is 1.
Now, the common factors can be found like this.
728:2x 2x 2x 7x 13
991:991
136:2x 2x 2x 17
168:2x 2x 2x 3x 7
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 7 = 448
Therefore, the value for common factors is 448.
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 = 16483643904/(1x448)
LCM = 16483643904/448
LCM = 36793848
Thus, we can understand that the LCM of 728,991,136,168 is 36793848.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 728, 991, 136, 168
1. What is the LCM of 728, 991, 136, 168?
Answer: LCM of 728, 991, 136, 168 is 36793848.
2. How to calculate the LCM of 728, 991, 136, 168?
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 728, 991, 136, 168.
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}.