LCM of 280, 136, 916, 645
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 280, 136, 916, 645 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 280, 136, 916, 645. So, keep reading to learn more.
Given numbers are 280,136,916,645
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 280,136,916,645 is 140615160.
Find LCM of 280,136,916,645 with Prime Factorization
| 2 | 280, 136, 916, 645 |
| 2 | 140, 68, 458, 645 |
| 2 | 70, 34, 229, 645 |
| 5 | 35, 17, 229, 645 |
| 7, 17, 229, 129 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 5 x 7 x 17 x 229 x 129 = 140615160
Therefore, the lowest common multiple of 280,136,916,645 is 140615160.
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.
280 x 136 x 916 x 645 = 22498425600
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.
280 : 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280
136 : 1, 2, 4, 8, 17, 34, 68, 136
916 : 1, 2, 4, 229, 458, 916
645 : 1, 3, 5, 15, 43, 129, 215, 645
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 280,136,916,645, is 1.
Now, the common factors can be found like this.
280:2x 2x 2x 5x 7
136:2x 2x 2x 17
916:2x 2x 229
645:3x 5x 43
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 5 = 160
Therefore, the value for common factors is 160.
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 = 22498425600/(1x160)
LCM = 22498425600/160
LCM = 140615160
Thus, we can understand that the LCM of 280,136,916,645 is 140615160.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 280, 136, 916, 645
1. What is the LCM of 280, 136, 916, 645?
Answer: LCM of 280, 136, 916, 645 is 140615160.
2. How to calculate the LCM of 280, 136, 916, 645?
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 280, 136, 916, 645.
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}.