LCM of 803, 720, 685, 128
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 803, 720, 685, 128 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 803, 720, 685, 128. So, keep reading to learn more.
Given numbers are 803,720,685,128
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 803,720,685,128 is 633663360.
Find LCM of 803,720,685,128 with Prime Factorization
| 2 | 803, 720, 685, 128 |
| 2 | 803, 360, 685, 64 |
| 2 | 803, 180, 685, 32 |
| 2 | 803, 90, 685, 16 |
| 5 | 803, 45, 685, 8 |
| 803, 9, 137, 8 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 5 x 803 x 9 x 137 x 8 = 633663360
Therefore, the lowest common multiple of 803,720,685,128 is 633663360.
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.
803 x 720 x 685 x 128 = 50693068800
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.
803 : 1, 11, 73, 803
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
685 : 1, 5, 137, 685
128 : 1, 2, 4, 8, 16, 32, 64, 128
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 803,720,685,128, is 1.
Now, the common factors can be found like this.
803:11x 73
720:2x 2x 2x 2x 3x 3x 5
685:5x 137
128:2x 2x 2x 2x 2x 2x 2
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 5 = 80
Therefore, the value for common factors is 80.
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 = 50693068800/(1x80)
LCM = 50693068800/80
LCM = 633663360
Thus, we can understand that the LCM of 803,720,685,128 is 633663360.
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FAQs on LCM of 803, 720, 685, 128
1. What is the LCM of 803, 720, 685, 128?
Answer: LCM of 803, 720, 685, 128 is 633663360.
2. How to calculate the LCM of 803, 720, 685, 128?
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 803, 720, 685, 128.
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}.