LCM of 911, 361, 780, 860, 721
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 911, 361, 780, 860, 721 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 911, 361, 780, 860, 721. So, keep reading to learn more.
Given numbers are 911,361,780,860,721
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 911,361,780,860,721 is 7952870338140.
Find LCM of 911,361,780,860,721 with Prime Factorization
| 2 | 911, 361, 780, 860, 721 |
| 2 | 911, 361, 390, 430, 721 |
| 5 | 911, 361, 195, 215, 721 |
| 911, 361, 39, 43, 721 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 911 x 361 x 39 x 43 x 721 = 7952870338140
Therefore, the lowest common multiple of 911,361,780,860,721 is 7952870338140.
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.
911 x 361 x 780 x 860 x 721 = 159057406762800
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.
911 : 1, 911
361 : 1, 19, 361
780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
860 : 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860
721 : 1, 7, 103, 721
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 911,361,780,860,721, is 1.
Now, the common factors can be found like this.
911:911
361:19x 19
780:2x 2x 3x 5x 13
860:2x 2x 5x 43
721:7x 103
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 5 = 20
Therefore, the value for common factors is 20.
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 = 159057406762800/(1x20)
LCM = 159057406762800/20
LCM = 7952870338140
Thus, we can understand that the LCM of 911,361,780,860,721 is 7952870338140.
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FAQs on LCM of 911, 361, 780, 860, 721
1. What is the LCM of 911, 361, 780, 860, 721?
Answer: LCM of 911, 361, 780, 860, 721 is 7952870338140.
2. How to calculate the LCM of 911, 361, 780, 860, 721?
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 911, 361, 780, 860, 721.
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}.