LCM of 138, 253, 820, 979, 942
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 138, 253, 820, 979, 942 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 138, 253, 820, 979, 942. So, keep reading to learn more.
Given numbers are 138,253,820,979,942
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 138,253,820,979,942 is 8696515740.
Find LCM of 138,253,820,979,942 with Prime Factorization
| 2 | 138, 253, 820, 979, 942 |
| 3 | 69, 253, 410, 979, 471 |
| 11 | 23, 253, 410, 979, 157 |
| 23 | 23, 23, 410, 89, 157 |
| 1, 1, 410, 89, 157 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 11 x 23 x 1 x 1 x 410 x 89 x 157 = 8696515740
Therefore, the lowest common multiple of 138,253,820,979,942 is 8696515740.
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.
138 x 253 x 820 x 979 x 942 = 26402621786640
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.
138 : 1, 2, 3, 6, 23, 46, 69, 138
253 : 1, 11, 23, 253
820 : 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820
979 : 1, 11, 89, 979
942 : 1, 2, 3, 6, 157, 314, 471, 942
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 138,253,820,979,942, is 1.
Now, the common factors can be found like this.
138:2x 3x 23
253:11x 23
820:2x 2x 5x 41
979:11x 89
942:2x 3x 157
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 11x 23 = 3036
Therefore, the value for common factors is 3036.
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 = 26402621786640/(1x3036)
LCM = 26402621786640/3036
LCM = 8696515740
Thus, we can understand that the LCM of 138,253,820,979,942 is 8696515740.
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FAQs on LCM of 138, 253, 820, 979, 942
1. What is the LCM of 138, 253, 820, 979, 942?
Answer: LCM of 138, 253, 820, 979, 942 is 8696515740.
2. How to calculate the LCM of 138, 253, 820, 979, 942?
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 138, 253, 820, 979, 942.
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}.