LCM of 287, 861, 880, 621
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 287, 861, 880, 621 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, 861, 880, 621. So, keep reading to learn more.
Given numbers are 287,861,880,621
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 287,861,880,621 is 156839760.
Find LCM of 287,861,880,621 with Prime Factorization
| 3 | 287, 861, 880, 621 |
| 7 | 287, 287, 880, 207 |
| 41 | 41, 41, 880, 207 |
| 1, 1, 880, 207 |
Multiply the prime numbers at the bottom and the left side.
3 x 7 x 41 x 1 x 1 x 880 x 207 = 156839760
Therefore, the lowest common multiple of 287,861,880,621 is 156839760.
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 861 x 880 x 621 = 135039033360
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
861 : 1, 3, 7, 21, 41, 123, 287, 861
880 : 1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880
621 : 1, 3, 9, 23, 27, 69, 207, 621
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 287,861,880,621, is 1.
Now, the common factors can be found like this.
287:7x 41
861:3x 7x 41
880:2x 2x 2x 2x 5x 11
621:3x 3x 3x 23
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 7x 41 = 861
Therefore, the value for common factors is 861.
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 = 135039033360/(1x861)
LCM = 135039033360/861
LCM = 156839760
Thus, we can understand that the LCM of 287,861,880,621 is 156839760.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 287, 861, 880, 621
1. What is the LCM of 287, 861, 880, 621?
Answer: LCM of 287, 861, 880, 621 is 156839760.
2. How to calculate the LCM of 287, 861, 880, 621?
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, 861, 880, 621.
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}.