LCM of 630, 639, 609, 990
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 630, 639, 609, 990 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 630, 639, 609, 990. So, keep reading to learn more.
Given numbers are 630,639,609,990
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 630,639,609,990 is 14268870.
Find LCM of 630,639,609,990 with Prime Factorization
| 2 | 630, 639, 609, 990 |
| 3 | 315, 639, 609, 495 |
| 3 | 105, 213, 203, 165 |
| 5 | 35, 71, 203, 55 |
| 7 | 7, 71, 203, 11 |
| 1, 71, 29, 11 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 3 x 5 x 7 x 1 x 71 x 29 x 11 = 14268870
Therefore, the lowest common multiple of 630,639,609,990 is 14268870.
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.
630 x 639 x 609 x 990 = 242713478700
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.
630 : 1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630
639 : 1, 3, 9, 71, 213, 639
609 : 1, 3, 7, 21, 29, 87, 203, 609
990 : 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990
3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 630,639,609,990, is 3.
Now, the common factors can be found like this.
630:2x 3x 3x 5x 7
639:3x 3x 71
609:3x 7x 29
990:2x 3x 3x 5x 11
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 3x 3x 3x 5x 7 = 5670
Therefore, the value for common factors is 5670.
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 = 242713478700/(3x5670)
LCM = 242713478700/17010
LCM = 14268870
Thus, we can understand that the LCM of 630,639,609,990 is 14268870.
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FAQs on LCM of 630, 639, 609, 990
1. What is the LCM of 630, 639, 609, 990?
Answer: LCM of 630, 639, 609, 990 is 14268870.
2. How to calculate the LCM of 630, 639, 609, 990?
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 630, 639, 609, 990.
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}.