Find the LCM of 838, 942, 780, 645 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 838, 942, 780, 645. So, keep reading to learn more.
Given numbers are 838,942,780,645
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 838,942,780,645 is 2206361820.
Find LCM of 838,942,780,645 with Prime Factorization
2 | 838, 942, 780, 645 |
3 | 419, 471, 390, 645 |
5 | 419, 157, 130, 215 |
419, 157, 26, 43 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 419 x 157 x 26 x 43 = 2206361820
Therefore, the lowest common multiple of 838,942,780,645 is 2206361820.
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.
838 x 942 x 780 x 645 = 397145127600
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.
838 : 1, 2, 419, 838
942 : 1, 2, 3, 6, 157, 314, 471, 942
780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
645 : 1, 3, 5, 15, 43, 129, 215, 645
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 838,942,780,645, is 1.
Now, the common factors can be found like this.
838:2x 419
942:2x 3x 157
780:2x 2x 3x 5x 13
645:3x 5x 43
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2x 3x 3x 5 = 180
Therefore, the value for common factors is 180.
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 = 397145127600/(1x180)
LCM = 397145127600/180
LCM = 2206361820
Thus, we can understand that the LCM of 838,942,780,645 is 2206361820.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 838, 942, 780, 645?
Answer: LCM of 838, 942, 780, 645 is 2206361820.
2. How to calculate the LCM of 838, 942, 780, 645?
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 838, 942, 780, 645.
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}.