LCM of 391, 138, 186, 138
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 391, 138, 186, 138 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 391, 138, 186, 138. So, keep reading to learn more.
Given numbers are 391,138,186,138
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 391,138,186,138 is 72726.
Find LCM of 391,138,186,138 with Prime Factorization
| 2 | 391, 138, 186, 138 |
| 3 | 391, 69, 93, 69 |
| 23 | 391, 23, 31, 23 |
| 17, 1, 31, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 23 x 17 x 1 x 31 x 1 = 72726
Therefore, the lowest common multiple of 391,138,186,138 is 72726.
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.
391 x 138 x 186 x 138 = 1384993944
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.
391 : 1, 17, 23, 391
138 : 1, 2, 3, 6, 23, 46, 69, 138
186 : 1, 2, 3, 6, 31, 62, 93, 186
138 : 1, 2, 3, 6, 23, 46, 69, 138
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 391,138,186,138, is 1.
Now, the common factors can be found like this.
391:17x 23
138:2x 3x 23
186:2x 3x 31
138:2x 3x 23
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 23x 23 = 19044
Therefore, the value for common factors is 19044.
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 = 1384993944/(1x19044)
LCM = 1384993944/19044
LCM = 72726
Thus, we can understand that the LCM of 391,138,186,138 is 72726.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 391, 138, 186, 138
1. What is the LCM of 391, 138, 186, 138?
Answer: LCM of 391, 138, 186, 138 is 72726.
2. How to calculate the LCM of 391, 138, 186, 138?
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 391, 138, 186, 138.
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}.