LCM of 255, 391, 535, 640
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 255, 391, 535, 640 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 255, 391, 535, 640. So, keep reading to learn more.
Given numbers are 255,391,535,640
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 255,391,535,640 is 80327040.
Find LCM of 255,391,535,640 with Prime Factorization
| 5 | 255, 391, 535, 640 |
| 17 | 51, 391, 107, 128 |
| 3, 23, 107, 128 |
Multiply the prime numbers at the bottom and the left side.
5 x 17 x 3 x 23 x 107 x 128 = 80327040
Therefore, the lowest common multiple of 255,391,535,640 is 80327040.
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.
255 x 391 x 535 x 640 = 34138992000
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.
255 : 1, 3, 5, 15, 17, 51, 85, 255
391 : 1, 17, 23, 391
535 : 1, 5, 107, 535
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 255,391,535,640, is 1.
Now, the common factors can be found like this.
255:3x 5x 17
391:17x 23
535:5x 107
640:2x 2x 2x 2x 2x 2x 2x 5
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
5x 5x 17 = 425
Therefore, the value for common factors is 425.
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 = 34138992000/(1x425)
LCM = 34138992000/425
LCM = 80327040
Thus, we can understand that the LCM of 255,391,535,640 is 80327040.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 255, 391, 535, 640
1. What is the LCM of 255, 391, 535, 640?
Answer: LCM of 255, 391, 535, 640 is 80327040.
2. How to calculate the LCM of 255, 391, 535, 640?
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 255, 391, 535, 640.
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}.