LCM of 171, 122, 642, 867, 390
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 171, 122, 642, 867, 390 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 171, 122, 642, 867, 390. So, keep reading to learn more.
Given numbers are 171,122,642,867,390
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 171,122,642,867,390 is 41932515690.
Find LCM of 171,122,642,867,390 with Prime Factorization
| 2 | 171, 122, 642, 867, 390 |
| 3 | 171, 61, 321, 867, 195 |
| 57, 61, 107, 289, 65 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 57 x 61 x 107 x 289 x 65 = 41932515690
Therefore, the lowest common multiple of 171,122,642,867,390 is 41932515690.
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.
171 x 122 x 642 x 867 x 390 = 4528711694520
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.
171 : 1, 3, 9, 19, 57, 171
122 : 1, 2, 61, 122
642 : 1, 2, 3, 6, 107, 214, 321, 642
867 : 1, 3, 17, 51, 289, 867
390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 171,122,642,867,390, is 1.
Now, the common factors can be found like this.
171:3x 3x 19
122:2x 61
642:2x 3x 107
867:3x 17x 17
390:2x 3x 5x 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 3 = 108
Therefore, the value for common factors is 108.
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 = 4528711694520/(1x108)
LCM = 4528711694520/108
LCM = 41932515690
Thus, we can understand that the LCM of 171,122,642,867,390 is 41932515690.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 171, 122, 642, 867, 390
1. What is the LCM of 171, 122, 642, 867, 390?
Answer: LCM of 171, 122, 642, 867, 390 is 41932515690.
2. How to calculate the LCM of 171, 122, 642, 867, 390?
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 171, 122, 642, 867, 390.
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}.