LCM of 728, 420, 961, 705, 427
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 728, 420, 961, 705, 427 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 728, 420, 961, 705, 427. So, keep reading to learn more.
Given numbers are 728,420,961,705,427
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 728,420,961,705,427 is 30086642040.
Find LCM of 728,420,961,705,427 with Prime Factorization
| 2 | 728, 420, 961, 705, 427 |
| 2 | 364, 210, 961, 705, 427 |
| 3 | 182, 105, 961, 705, 427 |
| 5 | 182, 35, 961, 235, 427 |
| 7 | 182, 7, 961, 47, 427 |
| 26, 1, 961, 47, 61 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 7 x 26 x 1 x 961 x 47 x 61 = 30086642040
Therefore, the lowest common multiple of 728,420,961,705,427 is 30086642040.
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.
728 x 420 x 961 x 705 x 427 = 88454727597600
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.
728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
961 : 1, 31, 961
705 : 1, 3, 5, 15, 47, 141, 235, 705
427 : 1, 7, 61, 427
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 728,420,961,705,427, is 1.
Now, the common factors can be found like this.
728:2x 2x 2x 7x 13
420:2x 2x 3x 5x 7
961:31x 31
705:3x 5x 47
427:7x 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 2x 3x 5x 7x 7 = 2940
Therefore, the value for common factors is 2940.
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 = 88454727597600/(1x2940)
LCM = 88454727597600/2940
LCM = 30086642040
Thus, we can understand that the LCM of 728,420,961,705,427 is 30086642040.
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FAQs on LCM of 728, 420, 961, 705, 427
1. What is the LCM of 728, 420, 961, 705, 427?
Answer: LCM of 728, 420, 961, 705, 427 is 30086642040.
2. How to calculate the LCM of 728, 420, 961, 705, 427?
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 728, 420, 961, 705, 427.
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}.