LCM of 640, 945, 579, 720
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 640, 945, 579, 720 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 640, 945, 579, 720. So, keep reading to learn more.
Given numbers are 640,945,579,720
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 640,945,579,720 is 23345280.
Find LCM of 640,945,579,720 with Prime Factorization
| 2 | 640, 945, 579, 720 |
| 2 | 320, 945, 579, 360 |
| 2 | 160, 945, 579, 180 |
| 2 | 80, 945, 579, 90 |
| 3 | 40, 945, 579, 45 |
| 3 | 40, 315, 193, 15 |
| 5 | 40, 105, 193, 5 |
| 8, 21, 193, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 3 x 3 x 5 x 8 x 21 x 193 x 1 = 23345280
Therefore, the lowest common multiple of 640,945,579,720 is 23345280.
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.
640 x 945 x 579 x 720 = 252129024000
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.
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
945 : 1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945
579 : 1, 3, 193, 579
720 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 640,945,579,720, is 1.
Now, the common factors can be found like this.
640:2x 2x 2x 2x 2x 2x 2x 5
945:3x 3x 3x 5x 7
579:3x 193
720:2x 2x 2x 2x 3x 3x 5
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 2x 3x 3x 3x 5x 5 = 10800
Therefore, the value for common factors is 10800.
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 = 252129024000/(1x10800)
LCM = 252129024000/10800
LCM = 23345280
Thus, we can understand that the LCM of 640,945,579,720 is 23345280.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 640, 945, 579, 720
1. What is the LCM of 640, 945, 579, 720?
Answer: LCM of 640, 945, 579, 720 is 23345280.
2. How to calculate the LCM of 640, 945, 579, 720?
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 640, 945, 579, 720.
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}.