LCM of 405, 155, 978, 129
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 405, 155, 978, 129 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 405, 155, 978, 129. So, keep reading to learn more.
Given numbers are 405,155,978,129
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 405,155,978,129 is 175995990.
Find LCM of 405,155,978,129 with Prime Factorization
| 3 | 405, 155, 978, 129 |
| 5 | 135, 155, 326, 43 |
| 27, 31, 326, 43 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 27 x 31 x 326 x 43 = 175995990
Therefore, the lowest common multiple of 405,155,978,129 is 175995990.
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.
405 x 155 x 978 x 129 = 7919819550
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.
405 : 1, 3, 5, 9, 15, 27, 45, 81, 135, 405
155 : 1, 5, 31, 155
978 : 1, 2, 3, 6, 163, 326, 489, 978
129 : 1, 3, 43, 129
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 405,155,978,129, is 1.
Now, the common factors can be found like this.
405:3x 3x 3x 3x 5
155:5x 31
978:2x 3x 163
129:3x 43
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 5 = 45
Therefore, the value for common factors is 45.
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 = 7919819550/(1x45)
LCM = 7919819550/45
LCM = 175995990
Thus, we can understand that the LCM of 405,155,978,129 is 175995990.
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FAQs on LCM of 405, 155, 978, 129
1. What is the LCM of 405, 155, 978, 129?
Answer: LCM of 405, 155, 978, 129 is 175995990.
2. How to calculate the LCM of 405, 155, 978, 129?
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 405, 155, 978, 129.
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}.