LCM of 975, 691, 405, 765
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 975, 691, 405, 765 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 975, 691, 405, 765. So, keep reading to learn more.
Given numbers are 975,691,405,765
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 975,691,405,765 is 309239775.
Find LCM of 975,691,405,765 with Prime Factorization
| 3 | 975, 691, 405, 765 |
| 3 | 325, 691, 135, 255 |
| 5 | 325, 691, 45, 85 |
| 65, 691, 9, 17 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 5 x 65 x 691 x 9 x 17 = 309239775
Therefore, the lowest common multiple of 975,691,405,765 is 309239775.
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.
975 x 691 x 405 x 765 = 208736848125
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.
975 : 1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975
691 : 1, 691
405 : 1, 3, 5, 9, 15, 27, 45, 81, 135, 405
765 : 1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 975,691,405,765, is 1.
Now, the common factors can be found like this.
975:3x 5x 5x 13
691:691
405:3x 3x 3x 3x 5
765:3x 3x 5x 17
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 3x 5x 5 = 675
Therefore, the value for common factors is 675.
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 = 208736848125/(1x675)
LCM = 208736848125/675
LCM = 309239775
Thus, we can understand that the LCM of 975,691,405,765 is 309239775.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 975, 691, 405, 765
1. What is the LCM of 975, 691, 405, 765?
Answer: LCM of 975, 691, 405, 765 is 309239775.
2. How to calculate the LCM of 975, 691, 405, 765?
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 975, 691, 405, 765.
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}.