LCM of 985, 856, 860, 645
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 985, 856, 860, 645 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 985, 856, 860, 645. So, keep reading to learn more.
Given numbers are 985,856,860,645
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 985,856,860,645 is 108767640.
Find LCM of 985,856,860,645 with Prime Factorization
| 2 | 985, 856, 860, 645 |
| 2 | 985, 428, 430, 645 |
| 5 | 985, 214, 215, 645 |
| 43 | 197, 214, 43, 129 |
| 197, 214, 1, 3 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 43 x 197 x 214 x 1 x 3 = 108767640
Therefore, the lowest common multiple of 985,856,860,645 is 108767640.
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.
985 x 856 x 860 x 645 = 467700852000
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.
985 : 1, 5, 197, 985
856 : 1, 2, 4, 8, 107, 214, 428, 856
860 : 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860
645 : 1, 3, 5, 15, 43, 129, 215, 645
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 985,856,860,645, is 1.
Now, the common factors can be found like this.
985:5x 197
856:2x 2x 2x 107
860:2x 2x 5x 43
645:3x 5x 43
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2x 5x 5x 43 = 4300
Therefore, the value for common factors is 4300.
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 = 467700852000/(1x4300)
LCM = 467700852000/4300
LCM = 108767640
Thus, we can understand that the LCM of 985,856,860,645 is 108767640.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 985, 856, 860, 645
1. What is the LCM of 985, 856, 860, 645?
Answer: LCM of 985, 856, 860, 645 is 108767640.
2. How to calculate the LCM of 985, 856, 860, 645?
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 985, 856, 860, 645.
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}.