LCM of 661, 665, 228, 285
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 661, 665, 228, 285 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 661, 665, 228, 285. So, keep reading to learn more.
Given numbers are 661,665,228,285
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 661,665,228,285 is 5274780.
Find LCM of 661,665,228,285 with Prime Factorization
| 3 | 661, 665, 228, 285 |
| 5 | 661, 665, 76, 95 |
| 19 | 661, 133, 76, 19 |
| 661, 7, 4, 1 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 19 x 661 x 7 x 4 x 1 = 5274780
Therefore, the lowest common multiple of 661,665,228,285 is 5274780.
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.
661 x 665 x 228 x 285 = 28562933700
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.
661 : 1, 661
665 : 1, 5, 7, 19, 35, 95, 133, 665
228 : 1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228
285 : 1, 3, 5, 15, 19, 57, 95, 285
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 661,665,228,285, is 1.
Now, the common factors can be found like this.
661:661
665:5x 7x 19
228:2x 2x 3x 19
285:3x 5x 19
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 5x 19x 19 = 5415
Therefore, the value for common factors is 5415.
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 = 28562933700/(1x5415)
LCM = 28562933700/5415
LCM = 5274780
Thus, we can understand that the LCM of 661,665,228,285 is 5274780.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 661, 665, 228, 285
1. What is the LCM of 661, 665, 228, 285?
Answer: LCM of 661, 665, 228, 285 is 5274780.
2. How to calculate the LCM of 661, 665, 228, 285?
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 661, 665, 228, 285.
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}.