LCM of 820, 611, 689, 642, 949
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 820, 611, 689, 642, 949 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 820, 611, 689, 642, 949. So, keep reading to learn more.
Given numbers are 820,611,689,642,949
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 820,611,689,642,949 is 622241287980.
Find LCM of 820,611,689,642,949 with Prime Factorization
| 2 | 820, 611, 689, 642, 949 |
| 13 | 410, 611, 689, 321, 949 |
| 410, 47, 53, 321, 73 |
Multiply the prime numbers at the bottom and the left side.
2 x 13 x 410 x 47 x 53 x 321 x 73 = 622241287980
Therefore, the lowest common multiple of 820,611,689,642,949 is 622241287980.
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.
820 x 611 x 689 x 642 x 949 = 210317555337240
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.
820 : 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820
611 : 1, 13, 47, 611
689 : 1, 13, 53, 689
642 : 1, 2, 3, 6, 107, 214, 321, 642
949 : 1, 13, 73, 949
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 820,611,689,642,949, is 1.
Now, the common factors can be found like this.
820:2x 2x 5x 41
611:13x 47
689:13x 53
642:2x 3x 107
949:13x 73
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 13x 13 = 338
Therefore, the value for common factors is 338.
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 = 210317555337240/(1x338)
LCM = 210317555337240/338
LCM = 622241287980
Thus, we can understand that the LCM of 820,611,689,642,949 is 622241287980.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 820, 611, 689, 642, 949
1. What is the LCM of 820, 611, 689, 642, 949?
Answer: LCM of 820, 611, 689, 642, 949 is 622241287980.
2. How to calculate the LCM of 820, 611, 689, 642, 949?
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 820, 611, 689, 642, 949.
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}.