LCM of 643, 621, 565, 305
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 643, 621, 565, 305 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 643, 621, 565, 305. So, keep reading to learn more.
Given numbers are 643,621,565,305
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 643,621,565,305 is 13761977895.
Find LCM of 643,621,565,305 with Prime Factorization
| 5 | 643, 621, 565, 305 |
| 643, 621, 113, 61 |
Multiply the prime numbers at the bottom and the left side.
5 x 643 x 621 x 113 x 61 = 13761977895
Therefore, the lowest common multiple of 643,621,565,305 is 13761977895.
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.
643 x 621 x 565 x 305 = 68809889475
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.
643 : 1, 643
621 : 1, 3, 9, 23, 27, 69, 207, 621
565 : 1, 5, 113, 565
305 : 1, 5, 61, 305
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 643,621,565,305, is 1.
Now, the common factors can be found like this.
643:643
621:3x 3x 3x 23
565:5x 113
305:5x 61
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
5 = 5
Therefore, the value for common factors is 5.
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 = 68809889475/(1x5)
LCM = 68809889475/5
LCM = 13761977895
Thus, we can understand that the LCM of 643,621,565,305 is 13761977895.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 643, 621, 565, 305
1. What is the LCM of 643, 621, 565, 305?
Answer: LCM of 643, 621, 565, 305 is 13761977895.
2. How to calculate the LCM of 643, 621, 565, 305?
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 643, 621, 565, 305.
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}.