LCM of 815, 120, 909, 980
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 815, 120, 909, 980 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 815, 120, 909, 980. So, keep reading to learn more.
Given numbers are 815,120,909,980
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 815,120,909,980 is 290407320.
Find LCM of 815,120,909,980 with Prime Factorization
| 2 | 815, 120, 909, 980 |
| 2 | 815, 60, 909, 490 |
| 3 | 815, 30, 909, 245 |
| 5 | 815, 10, 303, 245 |
| 163, 2, 303, 49 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 163 x 2 x 303 x 49 = 290407320
Therefore, the lowest common multiple of 815,120,909,980 is 290407320.
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.
815 x 120 x 909 x 980 = 87122196000
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.
815 : 1, 5, 163, 815
120 : 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
909 : 1, 3, 9, 101, 303, 909
980 : 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 815,120,909,980, is 1.
Now, the common factors can be found like this.
815:5x 163
120:2x 2x 2x 3x 5
909:3x 3x 101
980:2x 2x 5x 7x 7
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 3x 5x 5 = 300
Therefore, the value for common factors is 300.
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 = 87122196000/(1x300)
LCM = 87122196000/300
LCM = 290407320
Thus, we can understand that the LCM of 815,120,909,980 is 290407320.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 815, 120, 909, 980
1. What is the LCM of 815, 120, 909, 980?
Answer: LCM of 815, 120, 909, 980 is 290407320.
2. How to calculate the LCM of 815, 120, 909, 980?
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 815, 120, 909, 980.
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}.