LCM of 992, 120, 978, 939
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 992, 120, 978, 939 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 992, 120, 978, 939. So, keep reading to learn more.
Given numbers are 992,120,978,939
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 992,120,978,939 is 759162720.
Find LCM of 992,120,978,939 with Prime Factorization
| 2 | 992, 120, 978, 939 |
| 2 | 496, 60, 489, 939 |
| 2 | 248, 30, 489, 939 |
| 3 | 124, 15, 489, 939 |
| 124, 5, 163, 313 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 124 x 5 x 163 x 313 = 759162720
Therefore, the lowest common multiple of 992,120,978,939 is 759162720.
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.
992 x 120 x 978 x 939 = 109319431680
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.
992 : 1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 496, 992
120 : 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
978 : 1, 2, 3, 6, 163, 326, 489, 978
939 : 1, 3, 313, 939
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 992,120,978,939, is 1.
Now, the common factors can be found like this.
992:2x 2x 2x 2x 2x 31
120:2x 2x 2x 3x 5
978:2x 3x 163
939:3x 313
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 3x 3 = 144
Therefore, the value for common factors is 144.
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 = 109319431680/(1x144)
LCM = 109319431680/144
LCM = 759162720
Thus, we can understand that the LCM of 992,120,978,939 is 759162720.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 992, 120, 978, 939
1. What is the LCM of 992, 120, 978, 939?
Answer: LCM of 992, 120, 978, 939 is 759162720.
2. How to calculate the LCM of 992, 120, 978, 939?
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 992, 120, 978, 939.
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}.