LCM of 391, 629, 165, 221
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 391, 629, 165, 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 391, 629, 165, 221. So, keep reading to learn more.
Given numbers are 391,629,165,221
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 391,629,165,221 is 31031715.
Find LCM of 391,629,165,221 with Prime Factorization
| 17 | 391, 629, 165, 221 |
| 23, 37, 165, 13 |
Multiply the prime numbers at the bottom and the left side.
17 x 23 x 37 x 165 x 13 = 31031715
Therefore, the lowest common multiple of 391,629,165,221 is 31031715.
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.
391 x 629 x 165 x 221 = 8968165635
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.
391 : 1, 17, 23, 391
629 : 1, 17, 37, 629
165 : 1, 3, 5, 11, 15, 33, 55, 165
221 : 1, 13, 17, 221
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 391,629,165,221, is 1.
Now, the common factors can be found like this.
391:17x 23
629:17x 37
165:3x 5x 11
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.
17x 17 = 289
Therefore, the value for common factors is 289.
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 = 8968165635/(1x289)
LCM = 8968165635/289
LCM = 31031715
Thus, we can understand that the LCM of 391,629,165,221 is 31031715.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 391, 629, 165, 221
1. What is the LCM of 391, 629, 165, 221?
Answer: LCM of 391, 629, 165, 221 is 31031715.
2. How to calculate the LCM of 391, 629, 165, 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 391, 629, 165, 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}.