LCM of 688, 645, 809, 641, 305
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 688, 645, 809, 641, 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 688, 645, 809, 641, 305. So, keep reading to learn more.
Given numbers are 688,645,809,641,305
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 688,645,809,641,305 is 326449556880.
Find LCM of 688,645,809,641,305 with Prime Factorization
| 5 | 688, 645, 809, 641, 305 |
| 43 | 688, 129, 809, 641, 61 |
| 16, 3, 809, 641, 61 |
Multiply the prime numbers at the bottom and the left side.
5 x 43 x 16 x 3 x 809 x 641 x 61 = 326449556880
Therefore, the lowest common multiple of 688,645,809,641,305 is 326449556880.
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.
688 x 645 x 809 x 641 x 305 = 70186654729200
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.
688 : 1, 2, 4, 8, 16, 43, 86, 172, 344, 688
645 : 1, 3, 5, 15, 43, 129, 215, 645
809 : 1, 809
641 : 1, 641
305 : 1, 5, 61, 305
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 688,645,809,641,305, is 1.
Now, the common factors can be found like this.
688:2x 2x 2x 2x 43
645:3x 5x 43
809:809
641:641
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.
5x 43 = 215
Therefore, the value for common factors is 215.
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 = 70186654729200/(1x215)
LCM = 70186654729200/215
LCM = 326449556880
Thus, we can understand that the LCM of 688,645,809,641,305 is 326449556880.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 688, 645, 809, 641, 305
1. What is the LCM of 688, 645, 809, 641, 305?
Answer: LCM of 688, 645, 809, 641, 305 is 326449556880.
2. How to calculate the LCM of 688, 645, 809, 641, 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 688, 645, 809, 641, 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}.