LCM of 812, 400, 280, 905
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 812, 400, 280, 905 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 812, 400, 280, 905. So, keep reading to learn more.
Given numbers are 812,400,280,905
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 812,400,280,905 is 14697200.
Find LCM of 812,400,280,905 with Prime Factorization
| 2 | 812, 400, 280, 905 |
| 2 | 406, 200, 140, 905 |
| 2 | 203, 100, 70, 905 |
| 5 | 203, 50, 35, 905 |
| 7 | 203, 10, 7, 181 |
| 29, 10, 1, 181 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 5 x 7 x 29 x 10 x 1 x 181 = 14697200
Therefore, the lowest common multiple of 812,400,280,905 is 14697200.
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.
812 x 400 x 280 x 905 = 82304320000
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.
812 : 1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812
400 : 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400
280 : 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280
905 : 1, 5, 181, 905
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 812,400,280,905, is 1.
Now, the common factors can be found like this.
812:2x 2x 7x 29
400:2x 2x 2x 2x 5x 5
280:2x 2x 2x 5x 7
905:5x 181
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 2x 2x 2x 5x 5x 7 = 5600
Therefore, the value for common factors is 5600.
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 = 82304320000/(1x5600)
LCM = 82304320000/5600
LCM = 14697200
Thus, we can understand that the LCM of 812,400,280,905 is 14697200.
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FAQs on LCM of 812, 400, 280, 905
1. What is the LCM of 812, 400, 280, 905?
Answer: LCM of 812, 400, 280, 905 is 14697200.
2. How to calculate the LCM of 812, 400, 280, 905?
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 812, 400, 280, 905.
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}.