LCM of 787, 642, 143, 189, 121
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 787, 642, 143, 189, 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 787, 642, 143, 189, 121. So, keep reading to learn more.
Given numbers are 787,642,143,189,121
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 787,642,143,189,121 is 50070166146.
Find LCM of 787,642,143,189,121 with Prime Factorization
| 3 | 787, 642, 143, 189, 121 |
| 11 | 787, 214, 143, 63, 121 |
| 787, 214, 13, 63, 11 |
Multiply the prime numbers at the bottom and the left side.
3 x 11 x 787 x 214 x 13 x 63 x 11 = 50070166146
Therefore, the lowest common multiple of 787,642,143,189,121 is 50070166146.
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.
787 x 642 x 143 x 189 x 121 = 1652315482818
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.
787 : 1, 787
642 : 1, 2, 3, 6, 107, 214, 321, 642
143 : 1, 11, 13, 143
189 : 1, 3, 7, 9, 21, 27, 63, 189
121 : 1, 11, 121
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 787,642,143,189,121, is 1.
Now, the common factors can be found like this.
787:787
642:2x 3x 107
143:11x 13
189:3x 3x 3x 7
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.
3x 11 = 33
Therefore, the value for common factors is 33.
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 = 1652315482818/(1x33)
LCM = 1652315482818/33
LCM = 50070166146
Thus, we can understand that the LCM of 787,642,143,189,121 is 50070166146.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 787, 642, 143, 189, 121
1. What is the LCM of 787, 642, 143, 189, 121?
Answer: LCM of 787, 642, 143, 189, 121 is 50070166146.
2. How to calculate the LCM of 787, 642, 143, 189, 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 787, 642, 143, 189, 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}.