LCM of 902, 820, 992, 643
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 902, 820, 992, 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 902, 820, 992, 643. So, keep reading to learn more.
Given numbers are 902,820,992,643
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 902,820,992,643 is 1438365280.
Find LCM of 902,820,992,643 with Prime Factorization
| 2 | 902, 820, 992, 643 |
| 2 | 451, 410, 496, 643 |
| 41 | 451, 205, 248, 643 |
| 11, 5, 248, 643 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 41 x 11 x 5 x 248 x 643 = 1438365280
Therefore, the lowest common multiple of 902,820,992,643 is 1438365280.
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.
902 x 820 x 992 x 643 = 471783811840
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.
902 : 1, 2, 11, 22, 41, 82, 451, 902
820 : 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820
992 : 1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 496, 992
643 : 1, 643
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 902,820,992,643, is 1.
Now, the common factors can be found like this.
902:2x 11x 41
820:2x 2x 5x 41
992:2x 2x 2x 2x 2x 31
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.
2x 2x 2x 41 = 328
Therefore, the value for common factors is 328.
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 = 471783811840/(1x328)
LCM = 471783811840/328
LCM = 1438365280
Thus, we can understand that the LCM of 902,820,992,643 is 1438365280.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 902, 820, 992, 643
1. What is the LCM of 902, 820, 992, 643?
Answer: LCM of 902, 820, 992, 643 is 1438365280.
2. How to calculate the LCM of 902, 820, 992, 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 902, 820, 992, 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}.