LCM of 981, 142, 338, 639
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 981, 142, 338, 639 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 981, 142, 338, 639. So, keep reading to learn more.
Given numbers are 981,142,338,639
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 981,142,338,639 is 23542038.
Find LCM of 981,142,338,639 with Prime Factorization
| 2 | 981, 142, 338, 639 |
| 3 | 981, 71, 169, 639 |
| 3 | 327, 71, 169, 213 |
| 71 | 109, 71, 169, 71 |
| 109, 1, 169, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 3 x 71 x 109 x 1 x 169 x 1 = 23542038
Therefore, the lowest common multiple of 981,142,338,639 is 23542038.
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.
981 x 142 x 338 x 639 = 30086724564
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.
981 : 1, 3, 9, 109, 327, 981
142 : 1, 2, 71, 142
338 : 1, 2, 13, 26, 169, 338
639 : 1, 3, 9, 71, 213, 639
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 981,142,338,639, is 1.
Now, the common factors can be found like this.
981:3x 3x 109
142:2x 71
338:2x 13x 13
639:3x 3x 71
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 71 = 1278
Therefore, the value for common factors is 1278.
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 = 30086724564/(1x1278)
LCM = 30086724564/1278
LCM = 23542038
Thus, we can understand that the LCM of 981,142,338,639 is 23542038.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 981, 142, 338, 639
1. What is the LCM of 981, 142, 338, 639?
Answer: LCM of 981, 142, 338, 639 is 23542038.
2. How to calculate the LCM of 981, 142, 338, 639?
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 981, 142, 338, 639.
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}.