LCM of 756, 420, 681, 480
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 756, 420, 681, 480 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 756, 420, 681, 480. So, keep reading to learn more.
Given numbers are 756,420,681,480
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 756,420,681,480 is 6864480.
Find LCM of 756,420,681,480 with Prime Factorization
| 2 | 756, 420, 681, 480 |
| 2 | 378, 210, 681, 240 |
| 3 | 189, 105, 681, 120 |
| 5 | 63, 35, 227, 40 |
| 7 | 63, 7, 227, 8 |
| 9, 1, 227, 8 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 7 x 9 x 1 x 227 x 8 = 6864480
Therefore, the lowest common multiple of 756,420,681,480 is 6864480.
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.
756 x 420 x 681 x 480 = 103790937600
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.
756 : 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756
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
681 : 1, 3, 227, 681
480 : 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480
3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 756,420,681,480, is 3.
Now, the common factors can be found like this.
756:2x 2x 3x 3x 3x 7
420:2x 2x 3x 5x 7
681:3x 227
480:2x 2x 2x 2x 2x 3x 5
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 3x 3x 5x 7 = 5040
Therefore, the value for common factors is 5040.
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 = 103790937600/(3x5040)
LCM = 103790937600/15120
LCM = 6864480
Thus, we can understand that the LCM of 756,420,681,480 is 6864480.
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FAQs on LCM of 756, 420, 681, 480
1. What is the LCM of 756, 420, 681, 480?
Answer: LCM of 756, 420, 681, 480 is 6864480.
2. How to calculate the LCM of 756, 420, 681, 480?
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 756, 420, 681, 480.
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}.