LCM of 287, 989, 678, 989, 643
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 287, 989, 678, 989, 643 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 287, 989, 678, 989, 643. So, keep reading to learn more.
Given numbers are 287,989,678,989,643
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 287,989,678,989,643 is 123742491222.
Find LCM of 287,989,678,989,643 with Prime Factorization
| 23 | 287, 989, 678, 989, 643 |
| 43 | 287, 43, 678, 43, 643 |
| 287, 1, 678, 1, 643 |
Multiply the prime numbers at the bottom and the left side.
23 x 43 x 287 x 1 x 678 x 1 x 643 = 123742491222
Therefore, the lowest common multiple of 287,989,678,989,643 is 123742491222.
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.
287 x 989 x 678 x 989 x 643 = 122381323818558
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.
287 : 1, 7, 41, 287
989 : 1, 23, 43, 989
678 : 1, 2, 3, 6, 113, 226, 339, 678
989 : 1, 23, 43, 989
643 : 1, 643
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 287,989,678,989,643, is 1.
Now, the common factors can be found like this.
287:7x 41
989:23x 43
678:2x 3x 113
989:23x 43
643:643
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
23x 43 = 989
Therefore, the value for common factors is 989.
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 = 122381323818558/(1x989)
LCM = 122381323818558/989
LCM = 123742491222
Thus, we can understand that the LCM of 287,989,678,989,643 is 123742491222.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 287, 989, 678, 989, 643
1. What is the LCM of 287, 989, 678, 989, 643?
Answer: LCM of 287, 989, 678, 989, 643 is 123742491222.
2. How to calculate the LCM of 287, 989, 678, 989, 643?
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 287, 989, 678, 989, 643.
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}.