LCM of 780, 847, 842, 605
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 780, 847, 842, 605 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 780, 847, 842, 605. So, keep reading to learn more.
Given numbers are 780,847,842,605
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 780,847,842,605 is 278137860.
Find LCM of 780,847,842,605 with Prime Factorization
| 2 | 780, 847, 842, 605 |
| 5 | 390, 847, 421, 605 |
| 11 | 78, 847, 421, 121 |
| 11 | 78, 77, 421, 11 |
| 78, 7, 421, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 11 x 11 x 78 x 7 x 421 x 1 = 278137860
Therefore, the lowest common multiple of 780,847,842,605 is 278137860.
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.
780 x 847 x 842 x 605 = 336546810600
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.
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
847 : 1, 7, 11, 77, 121, 847
842 : 1, 2, 421, 842
605 : 1, 5, 11, 55, 121, 605
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 780,847,842,605, is 1.
Now, the common factors can be found like this.
780:2x 2x 3x 5x 13
847:7x 11x 11
842:2x 421
605:5x 11x 11
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 5x 11x 11 = 1210
Therefore, the value for common factors is 1210.
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 = 336546810600/(1x1210)
LCM = 336546810600/1210
LCM = 278137860
Thus, we can understand that the LCM of 780,847,842,605 is 278137860.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 780, 847, 842, 605
1. What is the LCM of 780, 847, 842, 605?
Answer: LCM of 780, 847, 842, 605 is 278137860.
2. How to calculate the LCM of 780, 847, 842, 605?
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 780, 847, 842, 605.
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}.