LCM of 720, 648, 645, 762, 655
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 720, 648, 645, 762, 655 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 720, 648, 645, 762, 655. So, keep reading to learn more.
Given numbers are 720,648,645,762,655
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 720,648,645,762,655 is 4635733680.
Find LCM of 720,648,645,762,655 with Prime Factorization
| 2 | 720, 648, 645, 762, 655 |
| 2 | 360, 324, 645, 381, 655 |
| 2 | 180, 162, 645, 381, 655 |
| 3 | 90, 81, 645, 381, 655 |
| 3 | 30, 27, 215, 127, 655 |
| 5 | 10, 9, 215, 127, 655 |
| 2, 9, 43, 127, 131 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 3 x 5 x 2 x 9 x 43 x 127 x 131 = 4635733680
Therefore, the lowest common multiple of 720,648,645,762,655 is 4635733680.
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.
720 x 648 x 645 x 762 x 655 = 150197771232000
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.
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
648 : 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648
645 : 1, 3, 5, 15, 43, 129, 215, 645
762 : 1, 2, 3, 6, 127, 254, 381, 762
655 : 1, 5, 131, 655
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 720,648,645,762,655, is 1.
Now, the common factors can be found like this.
720:2x 2x 2x 2x 3x 3x 5
648:2x 2x 2x 3x 3x 3x 3
645:3x 5x 43
762:2x 3x 127
655:5x 131
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 2x 3x 3x 3x 3x 5x 5 = 32400
Therefore, the value for common factors is 32400.
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 = 150197771232000/(1x32400)
LCM = 150197771232000/32400
LCM = 4635733680
Thus, we can understand that the LCM of 720,648,645,762,655 is 4635733680.
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FAQs on LCM of 720, 648, 645, 762, 655
1. What is the LCM of 720, 648, 645, 762, 655?
Answer: LCM of 720, 648, 645, 762, 655 is 4635733680.
2. How to calculate the LCM of 720, 648, 645, 762, 655?
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 720, 648, 645, 762, 655.
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}.