LCM of 120, 721, 149, 280
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 120, 721, 149, 280 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 120, 721, 149, 280. So, keep reading to learn more.
Given numbers are 120,721,149,280
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 120,721,149,280 is 12891480.
Find LCM of 120,721,149,280 with Prime Factorization
| 2 | 120, 721, 149, 280 |
| 2 | 60, 721, 149, 140 |
| 2 | 30, 721, 149, 70 |
| 5 | 15, 721, 149, 35 |
| 7 | 3, 721, 149, 7 |
| 3, 103, 149, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 5 x 7 x 3 x 103 x 149 x 1 = 12891480
Therefore, the lowest common multiple of 120,721,149,280 is 12891480.
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.
120 x 721 x 149 x 280 = 3609614400
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.
120 : 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
721 : 1, 7, 103, 721
149 : 1, 149
280 : 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 120,721,149,280, is 1.
Now, the common factors can be found like this.
120:2x 2x 2x 3x 5
721:7x 103
149:149
280:2x 2x 2x 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 2x 2x 5x 7 = 280
Therefore, the value for common factors is 280.
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 = 3609614400/(1x280)
LCM = 3609614400/280
LCM = 12891480
Thus, we can understand that the LCM of 120,721,149,280 is 12891480.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 120, 721, 149, 280
1. What is the LCM of 120, 721, 149, 280?
Answer: LCM of 120, 721, 149, 280 is 12891480.
2. How to calculate the LCM of 120, 721, 149, 280?
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 120, 721, 149, 280.
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}.