LCM of 787, 688, 645, 802, 717
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 787, 688, 645, 802, 717 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 787, 688, 645, 802, 717. So, keep reading to learn more.
Given numbers are 787,688,645,802,717
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 787,688,645,802,717 is 778389023760.
Find LCM of 787,688,645,802,717 with Prime Factorization
| 2 | 787, 688, 645, 802, 717 |
| 3 | 787, 344, 645, 401, 717 |
| 43 | 787, 344, 215, 401, 239 |
| 787, 8, 5, 401, 239 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 43 x 787 x 8 x 5 x 401 x 239 = 778389023760
Therefore, the lowest common multiple of 787,688,645,802,717 is 778389023760.
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.
787 x 688 x 645 x 802 x 717 = 200824368130080
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.
787 : 1, 787
688 : 1, 2, 4, 8, 16, 43, 86, 172, 344, 688
645 : 1, 3, 5, 15, 43, 129, 215, 645
802 : 1, 2, 401, 802
717 : 1, 3, 239, 717
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 787,688,645,802,717, is 1.
Now, the common factors can be found like this.
787:787
688:2x 2x 2x 2x 43
645:3x 5x 43
802:2x 401
717:3x 239
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 43 = 258
Therefore, the value for common factors is 258.
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 = 200824368130080/(1x258)
LCM = 200824368130080/258
LCM = 778389023760
Thus, we can understand that the LCM of 787,688,645,802,717 is 778389023760.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 787, 688, 645, 802, 717
1. What is the LCM of 787, 688, 645, 802, 717?
Answer: LCM of 787, 688, 645, 802, 717 is 778389023760.
2. How to calculate the LCM of 787, 688, 645, 802, 717?
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 787, 688, 645, 802, 717.
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}.