LCM of 646, 442, 897, 994
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 646, 442, 897, 994 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 646, 442, 897, 994. So, keep reading to learn more.
Given numbers are 646,442,897,994
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 646,442,897,994 is 287992614.
Find LCM of 646,442,897,994 with Prime Factorization
| 2 | 646, 442, 897, 994 |
| 13 | 323, 221, 897, 497 |
| 17 | 323, 17, 69, 497 |
| 19, 1, 69, 497 |
Multiply the prime numbers at the bottom and the left side.
2 x 13 x 17 x 19 x 1 x 69 x 497 = 287992614
Therefore, the lowest common multiple of 646,442,897,994 is 287992614.
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.
646 x 442 x 897 x 994 = 254585470776
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.
646 : 1, 2, 17, 19, 34, 38, 323, 646
442 : 1, 2, 13, 17, 26, 34, 221, 442
897 : 1, 3, 13, 23, 39, 69, 299, 897
994 : 1, 2, 7, 14, 71, 142, 497, 994
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 646,442,897,994, is 1.
Now, the common factors can be found like this.
646:2x 17x 19
442:2x 13x 17
897:3x 13x 23
994:2x 7x 71
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 13x 17 = 884
Therefore, the value for common factors is 884.
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 = 254585470776/(1x884)
LCM = 254585470776/884
LCM = 287992614
Thus, we can understand that the LCM of 646,442,897,994 is 287992614.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 646, 442, 897, 994
1. What is the LCM of 646, 442, 897, 994?
Answer: LCM of 646, 442, 897, 994 is 287992614.
2. How to calculate the LCM of 646, 442, 897, 994?
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 646, 442, 897, 994.
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}.