LCM of 858, 978, 972, 121
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 858, 978, 972, 121 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 858, 978, 972, 121. So, keep reading to learn more.
Given numbers are 858,978,972,121
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 858,978,972,121 is 249219828.
Find LCM of 858,978,972,121 with Prime Factorization
| 2 | 858, 978, 972, 121 |
| 3 | 429, 489, 486, 121 |
| 11 | 143, 163, 162, 121 |
| 13, 163, 162, 11 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 11 x 13 x 163 x 162 x 11 = 249219828
Therefore, the lowest common multiple of 858,978,972,121 is 249219828.
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.
858 x 978 x 972 x 121 = 98691051888
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.
858 : 1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 143, 286, 429, 858
978 : 1, 2, 3, 6, 163, 326, 489, 978
972 : 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972
121 : 1, 11, 121
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 858,978,972,121, is 1.
Now, the common factors can be found like this.
858:2x 3x 11x 13
978:2x 3x 163
972:2x 2x 3x 3x 3x 3x 3
121:11x 11
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 11 = 396
Therefore, the value for common factors is 396.
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 = 98691051888/(1x396)
LCM = 98691051888/396
LCM = 249219828
Thus, we can understand that the LCM of 858,978,972,121 is 249219828.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 858, 978, 972, 121
1. What is the LCM of 858, 978, 972, 121?
Answer: LCM of 858, 978, 972, 121 is 249219828.
2. How to calculate the LCM of 858, 978, 972, 121?
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 858, 978, 972, 121.
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}.