LCM of 747, 720, 804, 990
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 747, 720, 804, 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 747, 720, 804, 990. So, keep reading to learn more.
Given numbers are 747,720,804,990
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 747,720,804,990 is 44043120.
Find LCM of 747,720,804,990 with Prime Factorization
| 2 | 747, 720, 804, 990 |
| 2 | 747, 360, 402, 495 |
| 3 | 747, 180, 201, 495 |
| 3 | 249, 60, 67, 165 |
| 5 | 83, 20, 67, 55 |
| 83, 4, 67, 11 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 5 x 83 x 4 x 67 x 11 = 44043120
Therefore, the lowest common multiple of 747,720,804,990 is 44043120.
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.
747 x 720 x 804 x 990 = 428099126400
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.
747 : 1, 3, 9, 83, 249, 747
720 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
804 : 1, 2, 3, 4, 6, 12, 67, 134, 201, 268, 402, 804
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 747,720,804,990, is 3.
Now, the common factors can be found like this.
747:3x 3x 83
720:2x 2x 2x 2x 3x 3x 5
804:2x 2x 3x 67
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 2x 2x 3x 3x 3x 3x 5 = 3240
Therefore, the value for common factors is 3240.
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 = 428099126400/(3x3240)
LCM = 428099126400/9720
LCM = 44043120
Thus, we can understand that the LCM of 747,720,804,990 is 44043120.
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FAQs on LCM of 747, 720, 804, 990
1. What is the LCM of 747, 720, 804, 990?
Answer: LCM of 747, 720, 804, 990 is 44043120.
2. How to calculate the LCM of 747, 720, 804, 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 747, 720, 804, 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}.