LCM of 261, 145, 261, 972
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 261, 145, 261, 972 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, 145, 261, 972. So, keep reading to learn more.
Given numbers are 261,145,261,972
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 261,145,261,972 is 140940.
Find LCM of 261,145,261,972 with Prime Factorization
| 3 | 261, 145, 261, 972 |
| 3 | 87, 145, 87, 324 |
| 29 | 29, 145, 29, 108 |
| 1, 5, 1, 108 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 29 x 1 x 5 x 1 x 108 = 140940
Therefore, the lowest common multiple of 261,145,261,972 is 140940.
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 145 x 261 x 972 = 9600973740
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
145 : 1, 5, 29, 145
261 : 1, 3, 9, 29, 87, 261
972 : 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 261,145,261,972, is 1.
Now, the common factors can be found like this.
261:3x 3x 29
145:5x 29
261:3x 3x 29
972:2x 2x 3x 3x 3x 3x 3
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 3x 29x 29 = 68121
Therefore, the value for common factors is 68121.
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 = 9600973740/(1x68121)
LCM = 9600973740/68121
LCM = 140940
Thus, we can understand that the LCM of 261,145,261,972 is 140940.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 261, 145, 261, 972
1. What is the LCM of 261, 145, 261, 972?
Answer: LCM of 261, 145, 261, 972 is 140940.
2. How to calculate the LCM of 261, 145, 261, 972?
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, 145, 261, 972.
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}.