LCM of 198, 642, 686, 474, 921
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 198, 642, 686, 474, 921 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 198, 642, 686, 474, 921. So, keep reading to learn more.
Given numbers are 198,642,686,474,921
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 198,642,686,474,921 is 176241651894.
Find LCM of 198,642,686,474,921 with Prime Factorization
| 2 | 198, 642, 686, 474, 921 |
| 3 | 99, 321, 343, 237, 921 |
| 33, 107, 343, 79, 307 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 33 x 107 x 343 x 79 x 307 = 176241651894
Therefore, the lowest common multiple of 198,642,686,474,921 is 176241651894.
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.
198 x 642 x 686 x 474 x 921 = 38068196809104
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.
198 : 1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198
642 : 1, 2, 3, 6, 107, 214, 321, 642
686 : 1, 2, 7, 14, 49, 98, 343, 686
474 : 1, 2, 3, 6, 79, 158, 237, 474
921 : 1, 3, 307, 921
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 198,642,686,474,921, is 1.
Now, the common factors can be found like this.
198:2x 3x 3x 11
642:2x 3x 107
686:2x 7x 7x 7
474:2x 3x 79
921:3x 307
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 2x 3x 3x 3 = 216
Therefore, the value for common factors is 216.
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 = 38068196809104/(1x216)
LCM = 38068196809104/216
LCM = 176241651894
Thus, we can understand that the LCM of 198,642,686,474,921 is 176241651894.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 198, 642, 686, 474, 921
1. What is the LCM of 198, 642, 686, 474, 921?
Answer: LCM of 198, 642, 686, 474, 921 is 176241651894.
2. How to calculate the LCM of 198, 642, 686, 474, 921?
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 198, 642, 686, 474, 921.
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}.