LCM of 689, 861, 786, 639, 738
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 689, 861, 786, 639, 738 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, 861, 786, 639, 738. So, keep reading to learn more.
Given numbers are 689,861,786,639,738
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 689,861,786,639,738 is 33105737574.
Find LCM of 689,861,786,639,738 with Prime Factorization
| 2 | 689, 861, 786, 639, 738 |
| 3 | 689, 861, 393, 639, 369 |
| 3 | 689, 287, 131, 213, 123 |
| 41 | 689, 287, 131, 71, 41 |
| 689, 7, 131, 71, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 3 x 41 x 689 x 7 x 131 x 71 x 1 = 33105737574
Therefore, the lowest common multiple of 689,861,786,639,738 is 33105737574.
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 861 x 786 x 639 x 738 = 219888308966508
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
861 : 1, 3, 7, 21, 41, 123, 287, 861
786 : 1, 2, 3, 6, 131, 262, 393, 786
639 : 1, 3, 9, 71, 213, 639
738 : 1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 738
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 689,861,786,639,738, is 1.
Now, the common factors can be found like this.
689:13x 53
861:3x 7x 41
786:2x 3x 131
639:3x 3x 71
738:2x 3x 3x 41
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 3x 3x 3x 41 = 6642
Therefore, the value for common factors is 6642.
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 = 219888308966508/(1x6642)
LCM = 219888308966508/6642
LCM = 33105737574
Thus, we can understand that the LCM of 689,861,786,639,738 is 33105737574.
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FAQs on LCM of 689, 861, 786, 639, 738
1. What is the LCM of 689, 861, 786, 639, 738?
Answer: LCM of 689, 861, 786, 639, 738 is 33105737574.
2. How to calculate the LCM of 689, 861, 786, 639, 738?
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, 861, 786, 639, 738.
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}.