LCM of 878, 690, 242, 805
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 878, 690, 242, 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 878, 690, 242, 805. So, keep reading to learn more.
Given numbers are 878,690,242,805
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 878,690,242,805 is 256564770.
Find LCM of 878,690,242,805 with Prime Factorization
| 2 | 878, 690, 242, 805 |
| 5 | 439, 345, 121, 805 |
| 23 | 439, 69, 121, 161 |
| 439, 3, 121, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 23 x 439 x 3 x 121 x 7 = 256564770
Therefore, the lowest common multiple of 878,690,242,805 is 256564770.
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.
878 x 690 x 242 x 805 = 118019794200
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.
878 : 1, 2, 439, 878
690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
242 : 1, 2, 11, 22, 121, 242
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 878,690,242,805, is 1.
Now, the common factors can be found like this.
878:2x 439
690:2x 3x 5x 23
242:2x 11x 11
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.
2x 2x 5x 23 = 460
Therefore, the value for common factors is 460.
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 = 118019794200/(1x460)
LCM = 118019794200/460
LCM = 256564770
Thus, we can understand that the LCM of 878,690,242,805 is 256564770.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 878, 690, 242, 805
1. What is the LCM of 878, 690, 242, 805?
Answer: LCM of 878, 690, 242, 805 is 256564770.
2. How to calculate the LCM of 878, 690, 242, 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 878, 690, 242, 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}.