LCM of 689, 785, 381, 689
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 689, 785, 381, 689 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, 785, 381, 689. So, keep reading to learn more.
Given numbers are 689,785,381,689
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 689,785,381,689 is 206069565.
Find LCM of 689,785,381,689 with Prime Factorization
| 13 | 689, 785, 381, 689 |
| 53 | 53, 785, 381, 53 |
| 1, 785, 381, 1 |
Multiply the prime numbers at the bottom and the left side.
13 x 53 x 1 x 785 x 381 x 1 = 206069565
Therefore, the lowest common multiple of 689,785,381,689 is 206069565.
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 785 x 381 x 689 = 141981930285
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
785 : 1, 5, 157, 785
381 : 1, 3, 127, 381
689 : 1, 13, 53, 689
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 689,785,381,689, is 1.
Now, the common factors can be found like this.
689:13x 53
785:5x 157
381:3x 127
689:13x 53
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
13x 53 = 689
Therefore, the value for common factors is 689.
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 = 141981930285/(1x689)
LCM = 141981930285/689
LCM = 206069565
Thus, we can understand that the LCM of 689,785,381,689 is 206069565.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 689, 785, 381, 689
1. What is the LCM of 689, 785, 381, 689?
Answer: LCM of 689, 785, 381, 689 is 206069565.
2. How to calculate the LCM of 689, 785, 381, 689?
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, 785, 381, 689.
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}.