LCM of 998, 740, 720, 390, 128
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 998, 740, 720, 390, 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 998, 740, 720, 390, 128. So, keep reading to learn more.
Given numbers are 998,740,720,390,128
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 998,740,720,390,128 is 1382509440.
Find LCM of 998,740,720,390,128 with Prime Factorization
| 2 | 998, 740, 720, 390, 128 |
| 2 | 499, 370, 360, 195, 64 |
| 2 | 499, 185, 180, 195, 32 |
| 2 | 499, 185, 90, 195, 16 |
| 3 | 499, 185, 45, 195, 8 |
| 5 | 499, 185, 15, 65, 8 |
| 499, 37, 3, 13, 8 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 3 x 5 x 499 x 37 x 3 x 13 x 8 = 1382509440
Therefore, the lowest common multiple of 998,740,720,390,128 is 1382509440.
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.
998 x 740 x 720 x 390 x 128 = 26544181248000
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.
998 : 1, 2, 499, 998
740 : 1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740
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
390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
128 : 1, 2, 4, 8, 16, 32, 64, 128
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 998,740,720,390,128, is 2.
Now, the common factors can be found like this.
998:2x 499
740:2x 2x 5x 37
720:2x 2x 2x 2x 3x 3x 5
390:2x 3x 5x 13
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 2x 2x 2x 3x 5x 5 = 9600
Therefore, the value for common factors is 9600.
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 = 26544181248000/(2x9600)
LCM = 26544181248000/19200
LCM = 1382509440
Thus, we can understand that the LCM of 998,740,720,390,128 is 1382509440.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 998, 740, 720, 390, 128
1. What is the LCM of 998, 740, 720, 390, 128?
Answer: LCM of 998, 740, 720, 390, 128 is 1382509440.
2. How to calculate the LCM of 998, 740, 720, 390, 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 998, 740, 720, 390, 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}.