LCM of 361, 381, 721, 810, 840
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 361, 381, 721, 810, 840 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 361, 381, 721, 810, 840. So, keep reading to learn more.
Given numbers are 361,381,721,810,840
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 361,381,721,810,840 is 107100425880.
Find LCM of 361,381,721,810,840 with Prime Factorization
| 2 | 361, 381, 721, 810, 840 |
| 3 | 361, 381, 721, 405, 420 |
| 5 | 361, 127, 721, 135, 140 |
| 7 | 361, 127, 721, 27, 28 |
| 361, 127, 103, 27, 4 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 7 x 361 x 127 x 103 x 27 x 4 = 107100425880
Therefore, the lowest common multiple of 361,381,721,810,840 is 107100425880.
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.
361 x 381 x 721 x 810 x 840 = 67473268304400
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.
361 : 1, 19, 361
381 : 1, 3, 127, 381
721 : 1, 7, 103, 721
810 : 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810
840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 361,381,721,810,840, is 1.
Now, the common factors can be found like this.
361:19x 19
381:3x 127
721:7x 103
810:2x 3x 3x 3x 3x 5
840:2x 2x 2x 3x 5x 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 3x 3x 5x 7 = 630
Therefore, the value for common factors is 630.
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 = 67473268304400/(1x630)
LCM = 67473268304400/630
LCM = 107100425880
Thus, we can understand that the LCM of 361,381,721,810,840 is 107100425880.
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FAQs on LCM of 361, 381, 721, 810, 840
1. What is the LCM of 361, 381, 721, 810, 840?
Answer: LCM of 361, 381, 721, 810, 840 is 107100425880.
2. How to calculate the LCM of 361, 381, 721, 810, 840?
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 361, 381, 721, 810, 840.
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}.