LCM of 705, 387, 285, 817
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 705, 387, 285, 817 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, 387, 285, 817. So, keep reading to learn more.
Given numbers are 705,387,285,817
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 705,387,285,817 is 1727955.
Find LCM of 705,387,285,817 with Prime Factorization
| 3 | 705, 387, 285, 817 |
| 5 | 235, 129, 95, 817 |
| 19 | 47, 129, 19, 817 |
| 43 | 47, 129, 1, 43 |
| 47, 3, 1, 1 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 19 x 43 x 47 x 3 x 1 x 1 = 1727955
Therefore, the lowest common multiple of 705,387,285,817 is 1727955.
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 387 x 285 x 817 = 63528265575
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
387 : 1, 3, 9, 43, 129, 387
285 : 1, 3, 5, 15, 19, 57, 95, 285
817 : 1, 19, 43, 817
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 705,387,285,817, is 1.
Now, the common factors can be found like this.
705:3x 5x 47
387:3x 3x 43
285:3x 5x 19
817:19x 43
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 5x 19x 43 = 36765
Therefore, the value for common factors is 36765.
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 = 63528265575/(1x36765)
LCM = 63528265575/36765
LCM = 1727955
Thus, we can understand that the LCM of 705,387,285,817 is 1727955.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 705, 387, 285, 817
1. What is the LCM of 705, 387, 285, 817?
Answer: LCM of 705, 387, 285, 817 is 1727955.
2. How to calculate the LCM of 705, 387, 285, 817?
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, 387, 285, 817.
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}.