LCM of 391, 961, 391, 280
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 391, 961, 391, 280 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, 961, 391, 280. So, keep reading to learn more.
Given numbers are 391,961,391,280
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 391,961,391,280 is 105210280.
Find LCM of 391,961,391,280 with Prime Factorization
| 17 | 391, 961, 391, 280 |
| 23 | 23, 961, 23, 280 |
| 1, 961, 1, 280 |
Multiply the prime numbers at the bottom and the left side.
17 x 23 x 1 x 961 x 1 x 280 = 105210280
Therefore, the lowest common multiple of 391,961,391,280 is 105210280.
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 961 x 391 x 280 = 41137219480
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
961 : 1, 31, 961
391 : 1, 17, 23, 391
280 : 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 391,961,391,280, is 1.
Now, the common factors can be found like this.
391:17x 23
961:31x 31
391:17x 23
280:2x 2x 2x 5x 7
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
17x 23 = 391
Therefore, the value for common factors is 391.
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 = 41137219480/(1x391)
LCM = 41137219480/391
LCM = 105210280
Thus, we can understand that the LCM of 391,961,391,280 is 105210280.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 391, 961, 391, 280
1. What is the LCM of 391, 961, 391, 280?
Answer: LCM of 391, 961, 391, 280 is 105210280.
2. How to calculate the LCM of 391, 961, 391, 280?
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, 961, 391, 280.
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}.