LCM of 705, 806, 644, 560, 397
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 705, 806, 644, 560, 397 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 705, 806, 644, 560, 397. So, keep reading to learn more.
Given numbers are 705,806,644,560,397
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 705,806,644,560,397 is 290556455280.
Find LCM of 705,806,644,560,397 with Prime Factorization
| 2 | 705, 806, 644, 560, 397 |
| 2 | 705, 403, 322, 280, 397 |
| 5 | 705, 403, 161, 140, 397 |
| 7 | 141, 403, 161, 28, 397 |
| 141, 403, 23, 4, 397 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 7 x 141 x 403 x 23 x 4 x 397 = 290556455280
Therefore, the lowest common multiple of 705,806,644,560,397 is 290556455280.
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.
705 x 806 x 644 x 560 x 397 = 81355807478400
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.
705 : 1, 3, 5, 15, 47, 141, 235, 705
806 : 1, 2, 13, 26, 31, 62, 403, 806
644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
560 : 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560
397 : 1, 397
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 705,806,644,560,397, is 1.
Now, the common factors can be found like this.
705:3x 5x 47
806:2x 13x 31
644:2x 2x 7x 23
560:2x 2x 2x 2x 5x 7
397:397
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 2x 5x 7 = 280
Therefore, the value for common factors is 280.
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 = 81355807478400/(1x280)
LCM = 81355807478400/280
LCM = 290556455280
Thus, we can understand that the LCM of 705,806,644,560,397 is 290556455280.
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FAQs on LCM of 705, 806, 644, 560, 397
1. What is the LCM of 705, 806, 644, 560, 397?
Answer: LCM of 705, 806, 644, 560, 397 is 290556455280.
2. How to calculate the LCM of 705, 806, 644, 560, 397?
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 705, 806, 644, 560, 397.
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}.