LCM of 689, 339, 138, 621
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 689, 339, 138, 621 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 689, 339, 138, 621. So, keep reading to learn more.
Given numbers are 689,339,138,621
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 689,339,138,621 is 96698394.
Find LCM of 689,339,138,621 with Prime Factorization
| 3 | 689, 339, 138, 621 |
| 23 | 689, 113, 46, 207 |
| 689, 113, 2, 9 |
Multiply the prime numbers at the bottom and the left side.
3 x 23 x 689 x 113 x 2 x 9 = 96698394
Therefore, the lowest common multiple of 689,339,138,621 is 96698394.
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.
689 x 339 x 138 x 621 = 20016567558
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.
689 : 1, 13, 53, 689
339 : 1, 3, 113, 339
138 : 1, 2, 3, 6, 23, 46, 69, 138
621 : 1, 3, 9, 23, 27, 69, 207, 621
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 689,339,138,621, is 1.
Now, the common factors can be found like this.
689:13x 53
339:3x 113
138:2x 3x 23
621:3x 3x 3x 23
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 23 = 207
Therefore, the value for common factors is 207.
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 = 20016567558/(1x207)
LCM = 20016567558/207
LCM = 96698394
Thus, we can understand that the LCM of 689,339,138,621 is 96698394.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 689, 339, 138, 621
1. What is the LCM of 689, 339, 138, 621?
Answer: LCM of 689, 339, 138, 621 is 96698394.
2. How to calculate the LCM of 689, 339, 138, 621?
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 689, 339, 138, 621.
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}.