LCM of 810, 639, 702, 669
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 810, 639, 702, 669 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 810, 639, 702, 669. So, keep reading to learn more.
Given numbers are 810,639,702,669
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 810,639,702,669 is 166721490.
Find LCM of 810,639,702,669 with Prime Factorization
| 2 | 810, 639, 702, 669 |
| 3 | 405, 639, 351, 669 |
| 3 | 135, 213, 117, 223 |
| 3 | 45, 71, 39, 223 |
| 15, 71, 13, 223 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 3 x 3 x 15 x 71 x 13 x 223 = 166721490
Therefore, the lowest common multiple of 810,639,702,669 is 166721490.
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.
810 x 639 x 702 x 669 = 243079932420
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.
810 : 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810
639 : 1, 3, 9, 71, 213, 639
702 : 1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 234, 351, 702
669 : 1, 3, 223, 669
3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 810,639,702,669, is 3.
Now, the common factors can be found like this.
810:2x 3x 3x 3x 3x 5
639:3x 3x 71
702:2x 3x 3x 3x 13
669:3x 223
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 3 = 486
Therefore, the value for common factors is 486.
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 = 243079932420/(3x486)
LCM = 243079932420/1458
LCM = 166721490
Thus, we can understand that the LCM of 810,639,702,669 is 166721490.
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FAQs on LCM of 810, 639, 702, 669
1. What is the LCM of 810, 639, 702, 669?
Answer: LCM of 810, 639, 702, 669 is 166721490.
2. How to calculate the LCM of 810, 639, 702, 669?
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 810, 639, 702, 669.
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}.