LCM of 989, 728, 400, 976
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 989, 728, 400, 976 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 989, 728, 400, 976. So, keep reading to learn more.
Given numbers are 989,728,400,976
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 989,728,400,976 is 2195975600.
Find LCM of 989,728,400,976 with Prime Factorization
| 2 | 989, 728, 400, 976 |
| 2 | 989, 364, 200, 488 |
| 2 | 989, 182, 100, 244 |
| 2 | 989, 91, 50, 122 |
| 989, 91, 25, 61 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 989 x 91 x 25 x 61 = 2195975600
Therefore, the lowest common multiple of 989,728,400,976 is 2195975600.
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.
989 x 728 x 400 x 976 = 281084876800
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.
989 : 1, 23, 43, 989
728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
400 : 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400
976 : 1, 2, 4, 8, 16, 61, 122, 244, 488, 976
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 989,728,400,976, is 1.
Now, the common factors can be found like this.
989:23x 43
728:2x 2x 2x 7x 13
400:2x 2x 2x 2x 5x 5
976:2x 2x 2x 2x 61
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 2 = 128
Therefore, the value for common factors is 128.
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 = 281084876800/(1x128)
LCM = 281084876800/128
LCM = 2195975600
Thus, we can understand that the LCM of 989,728,400,976 is 2195975600.
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FAQs on LCM of 989, 728, 400, 976
1. What is the LCM of 989, 728, 400, 976?
Answer: LCM of 989, 728, 400, 976 is 2195975600.
2. How to calculate the LCM of 989, 728, 400, 976?
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 989, 728, 400, 976.
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}.