Find the LCM of 638, 676, 809, 805 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 638, 676, 809, 805. So, keep reading to learn more.
Given numbers are 638,676,809,805
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 638,676,809,805 is 140437076780.
Find LCM of 638,676,809,805 with Prime Factorization
2 | 638, 676, 809, 805 |
319, 338, 809, 805 |
Multiply the prime numbers at the bottom and the left side.
2 x 319 x 338 x 809 x 805 = 140437076780
Therefore, the lowest common multiple of 638,676,809,805 is 140437076780.
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.
638 x 676 x 809 x 805 = 280874153560
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.
638 : 1, 2, 11, 22, 29, 58, 319, 638
676 : 1, 2, 4, 13, 26, 52, 169, 338, 676
809 : 1, 809
805 : 1, 5, 7, 23, 35, 115, 161, 805
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,676,809,805, is 1.
Now, the common factors can be found like this.
638:2x 11x 29
676:2x 2x 13x 13
809:809
805:5x 7x 23
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2 = 2
Therefore, the value for common factors is 2.
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 = 280874153560/(1x2)
LCM = 280874153560/2
LCM = 140437076780
Thus, we can understand that the LCM of 638,676,809,805 is 140437076780.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 638, 676, 809, 805?
Answer: LCM of 638, 676, 809, 805 is 140437076780.
2. How to calculate the LCM of 638, 676, 809, 805?
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 638, 676, 809, 805.
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}.