LCM of 198, 720, 221, 949
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 198, 720, 221, 949 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, 720, 221, 949. So, keep reading to learn more.
Given numbers are 198,720,221,949
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 198,720,221,949 is 127773360.
Find LCM of 198,720,221,949 with Prime Factorization
| 2 | 198, 720, 221, 949 |
| 3 | 99, 360, 221, 949 |
| 3 | 33, 120, 221, 949 |
| 13 | 11, 40, 221, 949 |
| 11, 40, 17, 73 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 3 x 13 x 11 x 40 x 17 x 73 = 127773360
Therefore, the lowest common multiple of 198,720,221,949 is 127773360.
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 720 x 221 x 949 = 29898966240
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
720 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
221 : 1, 13, 17, 221
949 : 1, 13, 73, 949
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 198,720,221,949, is 1.
Now, the common factors can be found like this.
198:2x 3x 3x 11
720:2x 2x 2x 2x 3x 3x 5
221:13x 17
949:13x 73
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 3x 13 = 234
Therefore, the value for common factors is 234.
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 = 29898966240/(1x234)
LCM = 29898966240/234
LCM = 127773360
Thus, we can understand that the LCM of 198,720,221,949 is 127773360.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 198, 720, 221, 949
1. What is the LCM of 198, 720, 221, 949?
Answer: LCM of 198, 720, 221, 949 is 127773360.
2. How to calculate the LCM of 198, 720, 221, 949?
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, 720, 221, 949.
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}.