LCM of 491, 645, 686, 791
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 491, 645, 686, 791 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 491, 645, 686, 791. So, keep reading to learn more.
Given numbers are 491,645,686,791
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 491,645,686,791 is 24549563010.
Find LCM of 491,645,686,791 with Prime Factorization
| 7 | 491, 645, 686, 791 |
| 491, 645, 98, 113 |
Multiply the prime numbers at the bottom and the left side.
7 x 491 x 645 x 98 x 113 = 24549563010
Therefore, the lowest common multiple of 491,645,686,791 is 24549563010.
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.
491 x 645 x 686 x 791 = 171846941070
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.
491 : 1, 491
645 : 1, 3, 5, 15, 43, 129, 215, 645
686 : 1, 2, 7, 14, 49, 98, 343, 686
791 : 1, 7, 113, 791
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 491,645,686,791, is 1.
Now, the common factors can be found like this.
491:491
645:3x 5x 43
686:2x 7x 7x 7
791:7x 113
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
7 = 7
Therefore, the value for common factors is 7.
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 = 171846941070/(1x7)
LCM = 171846941070/7
LCM = 24549563010
Thus, we can understand that the LCM of 491,645,686,791 is 24549563010.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 491, 645, 686, 791
1. What is the LCM of 491, 645, 686, 791?
Answer: LCM of 491, 645, 686, 791 is 24549563010.
2. How to calculate the LCM of 491, 645, 686, 791?
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 491, 645, 686, 791.
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}.