LCM of 228, 238, 165, 221
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 228, 238, 165, 221 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 228, 238, 165, 221. So, keep reading to learn more.
Given numbers are 228,238,165,221
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 228,238,165,221 is 19399380.
Find LCM of 228,238,165,221 with Prime Factorization
| 2 | 228, 238, 165, 221 |
| 3 | 114, 119, 165, 221 |
| 17 | 38, 119, 55, 221 |
| 38, 7, 55, 13 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 17 x 38 x 7 x 55 x 13 = 19399380
Therefore, the lowest common multiple of 228,238,165,221 is 19399380.
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.
228 x 238 x 165 x 221 = 1978736760
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.
228 : 1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228
238 : 1, 2, 7, 14, 17, 34, 119, 238
165 : 1, 3, 5, 11, 15, 33, 55, 165
221 : 1, 13, 17, 221
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 228,238,165,221, is 1.
Now, the common factors can be found like this.
228:2x 2x 3x 19
238:2x 7x 17
165:3x 5x 11
221:13x 17
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 17 = 102
Therefore, the value for common factors is 102.
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 = 1978736760/(1x102)
LCM = 1978736760/102
LCM = 19399380
Thus, we can understand that the LCM of 228,238,165,221 is 19399380.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 228, 238, 165, 221
1. What is the LCM of 228, 238, 165, 221?
Answer: LCM of 228, 238, 165, 221 is 19399380.
2. How to calculate the LCM of 228, 238, 165, 221?
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 228, 238, 165, 221.
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}.