LCM of 871, 721, 783, 978
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 871, 721, 783, 978 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 871, 721, 783, 978. So, keep reading to learn more.
Given numbers are 871,721,783,978
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 871,721,783,978 is 160299726678.
Find LCM of 871,721,783,978 with Prime Factorization
| 3 | 871, 721, 783, 978 |
| 871, 721, 261, 326 |
Multiply the prime numbers at the bottom and the left side.
3 x 871 x 721 x 261 x 326 = 160299726678
Therefore, the lowest common multiple of 871,721,783,978 is 160299726678.
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.
871 x 721 x 783 x 978 = 480899180034
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.
871 : 1, 13, 67, 871
721 : 1, 7, 103, 721
783 : 1, 3, 9, 27, 29, 87, 261, 783
978 : 1, 2, 3, 6, 163, 326, 489, 978
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 871,721,783,978, is 1.
Now, the common factors can be found like this.
871:13x 67
721:7x 103
783:3x 3x 3x 29
978:2x 3x 163
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3 = 3
Therefore, the value for common factors is 3.
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 = 480899180034/(1x3)
LCM = 480899180034/3
LCM = 160299726678
Thus, we can understand that the LCM of 871,721,783,978 is 160299726678.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 871, 721, 783, 978
1. What is the LCM of 871, 721, 783, 978?
Answer: LCM of 871, 721, 783, 978 is 160299726678.
2. How to calculate the LCM of 871, 721, 783, 978?
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 871, 721, 783, 978.
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}.