LCM of 550, 405, 920, 221
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 550, 405, 920, 221 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 550, 405, 920, 221. So, keep reading to learn more.
Given numbers are 550,405,920,221
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 550,405,920,221 is 905790600.
Find LCM of 550,405,920,221 with Prime Factorization
| 2 | 550, 405, 920, 221 |
| 5 | 275, 405, 460, 221 |
| 55, 81, 92, 221 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 55 x 81 x 92 x 221 = 905790600
Therefore, the lowest common multiple of 550,405,920,221 is 905790600.
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.
550 x 405 x 920 x 221 = 45289530000
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.
550 : 1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 275, 550
405 : 1, 3, 5, 9, 15, 27, 45, 81, 135, 405
920 : 1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920
221 : 1, 13, 17, 221
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 550,405,920,221, is 1.
Now, the common factors can be found like this.
550:2x 5x 5x 11
405:3x 3x 3x 3x 5
920:2x 2x 2x 5x 23
221:13x 17
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 5x 5 = 50
Therefore, the value for common factors is 50.
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 = 45289530000/(1x50)
LCM = 45289530000/50
LCM = 905790600
Thus, we can understand that the LCM of 550,405,920,221 is 905790600.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 550, 405, 920, 221
1. What is the LCM of 550, 405, 920, 221?
Answer: LCM of 550, 405, 920, 221 is 905790600.
2. How to calculate the LCM of 550, 405, 920, 221?
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 550, 405, 920, 221.
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}.