LCM of 644, 393, 817, 676
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 644, 393, 817, 676 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 644, 393, 817, 676. So, keep reading to learn more.
Given numbers are 644,393,817,676
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 644,393,817,676 is 34945171716.
Find LCM of 644,393,817,676 with Prime Factorization
| 2 | 644, 393, 817, 676 |
| 2 | 322, 393, 817, 338 |
| 161, 393, 817, 169 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 161 x 393 x 817 x 169 = 34945171716
Therefore, the lowest common multiple of 644,393,817,676 is 34945171716.
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.
644 x 393 x 817 x 676 = 139780686864
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.
644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
393 : 1, 3, 131, 393
817 : 1, 19, 43, 817
676 : 1, 2, 4, 13, 26, 52, 169, 338, 676
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 644,393,817,676, is 1.
Now, the common factors can be found like this.
644:2x 2x 7x 23
393:3x 131
817:19x 43
676:2x 2x 13x 13
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2 = 4
Therefore, the value for common factors is 4.
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 = 139780686864/(1x4)
LCM = 139780686864/4
LCM = 34945171716
Thus, we can understand that the LCM of 644,393,817,676 is 34945171716.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 644, 393, 817, 676
1. What is the LCM of 644, 393, 817, 676?
Answer: LCM of 644, 393, 817, 676 is 34945171716.
2. How to calculate the LCM of 644, 393, 817, 676?
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 644, 393, 817, 676.
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}.