LCM of 297, 331, 387, 645
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 297, 331, 387, 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 297, 331, 387, 645. So, keep reading to learn more.
Given numbers are 297,331,387,645
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 297,331,387,645 is 21136005.
Find LCM of 297,331,387,645 with Prime Factorization
| 3 | 297, 331, 387, 645 |
| 3 | 99, 331, 129, 215 |
| 43 | 33, 331, 43, 215 |
| 33, 331, 1, 5 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 43 x 33 x 331 x 1 x 5 = 21136005
Therefore, the lowest common multiple of 297,331,387,645 is 21136005.
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.
297 x 331 x 387 x 645 = 24538901805
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.
297 : 1, 3, 9, 11, 27, 33, 99, 297
331 : 1, 331
387 : 1, 3, 9, 43, 129, 387
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 297,331,387,645, is 1.
Now, the common factors can be found like this.
297:3x 3x 3x 11
331:331
387:3x 3x 43
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.
3x 3x 3x 43 = 1161
Therefore, the value for common factors is 1161.
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 = 24538901805/(1x1161)
LCM = 24538901805/1161
LCM = 21136005
Thus, we can understand that the LCM of 297,331,387,645 is 21136005.
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FAQs on LCM of 297, 331, 387, 645
1. What is the LCM of 297, 331, 387, 645?
Answer: LCM of 297, 331, 387, 645 is 21136005.
2. How to calculate the LCM of 297, 331, 387, 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 297, 331, 387, 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}.