LCM of 198, 121, 980, 789, 915
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 198, 121, 980, 789, 915 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 198, 121, 980, 789, 915. So, keep reading to learn more.
Given numbers are 198,121,980,789,915
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 198,121,980,789,915 is 17121410460.
Find LCM of 198,121,980,789,915 with Prime Factorization
| 2 | 198, 121, 980, 789, 915 |
| 3 | 99, 121, 490, 789, 915 |
| 5 | 33, 121, 490, 263, 305 |
| 11 | 33, 121, 98, 263, 61 |
| 3, 11, 98, 263, 61 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 11 x 3 x 11 x 98 x 263 x 61 = 17121410460
Therefore, the lowest common multiple of 198,121,980,789,915 is 17121410460.
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.
198 x 121 x 980 x 789 x 915 = 16950196355400
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.
198 : 1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198
121 : 1, 11, 121
980 : 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980
789 : 1, 3, 263, 789
915 : 1, 3, 5, 15, 61, 183, 305, 915
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 198,121,980,789,915, is 1.
Now, the common factors can be found like this.
198:2x 3x 3x 11
121:11x 11
980:2x 2x 5x 7x 7
789:3x 263
915:3x 5x 61
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 3x 5x 11 = 990
Therefore, the value for common factors is 990.
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 = 16950196355400/(1x990)
LCM = 16950196355400/990
LCM = 17121410460
Thus, we can understand that the LCM of 198,121,980,789,915 is 17121410460.
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FAQs on LCM of 198, 121, 980, 789, 915
1. What is the LCM of 198, 121, 980, 789, 915?
Answer: LCM of 198, 121, 980, 789, 915 is 17121410460.
2. How to calculate the LCM of 198, 121, 980, 789, 915?
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 198, 121, 980, 789, 915.
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}.