LCM of 331, 756, 981, 728
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 331, 756, 981, 728 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 331, 756, 981, 728. So, keep reading to learn more.
Given numbers are 331,756,981,728
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 331,756,981,728 is 709168824.
Find LCM of 331,756,981,728 with Prime Factorization
| 2 | 331, 756, 981, 728 |
| 2 | 331, 378, 981, 364 |
| 3 | 331, 189, 981, 182 |
| 3 | 331, 63, 327, 182 |
| 7 | 331, 21, 109, 182 |
| 331, 3, 109, 26 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 7 x 331 x 3 x 109 x 26 = 709168824
Therefore, the lowest common multiple of 331,756,981,728 is 709168824.
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.
331 x 756 x 981 x 728 = 178710543648
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.
331 : 1, 331
756 : 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756
981 : 1, 3, 9, 109, 327, 981
728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 331,756,981,728, is 1.
Now, the common factors can be found like this.
331:331
756:2x 2x 3x 3x 3x 7
981:3x 3x 109
728:2x 2x 2x 7x 13
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 3x 3x 7 = 252
Therefore, the value for common factors is 252.
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 = 178710543648/(1x252)
LCM = 178710543648/252
LCM = 709168824
Thus, we can understand that the LCM of 331,756,981,728 is 709168824.
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FAQs on LCM of 331, 756, 981, 728
1. What is the LCM of 331, 756, 981, 728?
Answer: LCM of 331, 756, 981, 728 is 709168824.
2. How to calculate the LCM of 331, 756, 981, 728?
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 331, 756, 981, 728.
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}.