LCM of 856, 689, 749
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 856, 689, 749 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 856, 689, 749. So, keep reading to learn more.
Given numbers are 856,689,749
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 856,689,749 is 4128488.
Find LCM of 856,689,749 with Prime Factorization
| 107 | 856, 689, 749 |
| 8, 689, 7 |
Multiply the prime numbers at the bottom and the left side.
107 x 8 x 689 x 7 = 4128488
Therefore, the lowest common multiple of 856,689,749 is 4128488.
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.
856 x 689 x 749 = 441748216
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.
856 : 1, 2, 4, 8, 107, 214, 428, 856
689 : 1, 13, 53, 689
749 : 1, 7, 107, 749
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 856,689,749, is 1.
Now, the common factors can be found like this.
856:2x 2x 2x 107
689:13x 53
749:7x 107
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
107 = 107
Therefore, the value for common factors is 107.
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 = 441748216/(1x107)
LCM = 441748216/107
LCM = 4128488
Thus, we can understand that the LCM of 856,689,749 is 4128488.
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FAQs on LCM of 856, 689, 749
1. What is the LCM of 856, 689, 749?
Answer: LCM of 856, 689, 749 is 4128488.
2. How to calculate the LCM of 856, 689, 749?
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 856, 689, 749.
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}.