LCM of 261, 638, 945, 869
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 261, 638, 945, 869 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 261, 638, 945, 869. So, keep reading to learn more.
Given numbers are 261,638,945,869
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 261,638,945,869 is 47629890.
Find LCM of 261,638,945,869 with Prime Factorization
| 3 | 261, 638, 945, 869 |
| 3 | 87, 638, 315, 869 |
| 11 | 29, 638, 105, 869 |
| 29 | 29, 58, 105, 79 |
| 1, 2, 105, 79 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 11 x 29 x 1 x 2 x 105 x 79 = 47629890
Therefore, the lowest common multiple of 261,638,945,869 is 47629890.
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.
261 x 638 x 945 x 869 = 136745414190
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.
261 : 1, 3, 9, 29, 87, 261
638 : 1, 2, 11, 22, 29, 58, 319, 638
945 : 1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945
869 : 1, 11, 79, 869
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 261,638,945,869, is 1.
Now, the common factors can be found like this.
261:3x 3x 29
638:2x 11x 29
945:3x 3x 3x 5x 7
869:11x 79
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 11x 29 = 2871
Therefore, the value for common factors is 2871.
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 = 136745414190/(1x2871)
LCM = 136745414190/2871
LCM = 47629890
Thus, we can understand that the LCM of 261,638,945,869 is 47629890.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 261, 638, 945, 869
1. What is the LCM of 261, 638, 945, 869?
Answer: LCM of 261, 638, 945, 869 is 47629890.
2. How to calculate the LCM of 261, 638, 945, 869?
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 261, 638, 945, 869.
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}.