LCM of 261, 640, 747, 903
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 261, 640, 747, 903 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 261, 640, 747, 903. So, keep reading to learn more.
Given numbers are 261,640,747,903
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 261,640,747,903 is 4173160320.
Find LCM of 261,640,747,903 with Prime Factorization
| 3 | 261, 640, 747, 903 |
| 3 | 87, 640, 249, 301 |
| 29, 640, 83, 301 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 29 x 640 x 83 x 301 = 4173160320
Therefore, the lowest common multiple of 261,640,747,903 is 4173160320.
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.
261 x 640 x 747 x 903 = 112675328640
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.
261 : 1, 3, 9, 29, 87, 261
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
747 : 1, 3, 9, 83, 249, 747
903 : 1, 3, 7, 21, 43, 129, 301, 903
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 261,640,747,903, is 1.
Now, the common factors can be found like this.
261:3x 3x 29
640:2x 2x 2x 2x 2x 2x 2x 5
747:3x 3x 83
903:3x 7x 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 3 = 27
Therefore, the value for common factors is 27.
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 = 112675328640/(1x27)
LCM = 112675328640/27
LCM = 4173160320
Thus, we can understand that the LCM of 261,640,747,903 is 4173160320.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 261, 640, 747, 903
1. What is the LCM of 261, 640, 747, 903?
Answer: LCM of 261, 640, 747, 903 is 4173160320.
2. How to calculate the LCM of 261, 640, 747, 903?
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 261, 640, 747, 903.
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}.