Find the LCM of 391, 869, 561, 685 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, 869, 561, 685. So, keep reading to learn more.
Given numbers are 391,869,561,685
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 391,869,561,685 is 698245845.
Find LCM of 391,869,561,685 with Prime Factorization
11 | 391, 869, 561, 685 |
17 | 391, 79, 51, 685 |
23, 79, 3, 685 |
Multiply the prime numbers at the bottom and the left side.
11 x 17 x 23 x 79 x 3 x 685 = 698245845
Therefore, the lowest common multiple of 391,869,561,685 is 698245845.
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 869 x 561 x 685 = 130571973015
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
869 : 1, 11, 79, 869
561 : 1, 3, 11, 17, 33, 51, 187, 561
685 : 1, 5, 137, 685
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 391,869,561,685, is 1.
Now, the common factors can be found like this.
391:17x 23
869:11x 79
561:3x 11x 17
685:5x 137
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
11x 17 = 187
Therefore, the value for common factors is 187.
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 = 130571973015/(1x187)
LCM = 130571973015/187
LCM = 698245845
Thus, we can understand that the LCM of 391,869,561,685 is 698245845.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 391, 869, 561, 685?
Answer: LCM of 391, 869, 561, 685 is 698245845.
2. How to calculate the LCM of 391, 869, 561, 685?
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, 869, 561, 685.
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}.