LCM of 643, 921, 213, 121
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 643, 921, 213, 121 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 643, 921, 213, 121. So, keep reading to learn more.
Given numbers are 643,921,213,121
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 643,921,213,121 is 5087615973.
Find LCM of 643,921,213,121 with Prime Factorization
| 3 | 643, 921, 213, 121 |
| 643, 307, 71, 121 |
Multiply the prime numbers at the bottom and the left side.
3 x 643 x 307 x 71 x 121 = 5087615973
Therefore, the lowest common multiple of 643,921,213,121 is 5087615973.
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.
643 x 921 x 213 x 121 = 15262847919
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.
643 : 1, 643
921 : 1, 3, 307, 921
213 : 1, 3, 71, 213
121 : 1, 11, 121
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 643,921,213,121, is 1.
Now, the common factors can be found like this.
643:643
921:3x 307
213:3x 71
121:11x 11
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3 = 3
Therefore, the value for common factors is 3.
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 = 15262847919/(1x3)
LCM = 15262847919/3
LCM = 5087615973
Thus, we can understand that the LCM of 643,921,213,121 is 5087615973.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 643, 921, 213, 121
1. What is the LCM of 643, 921, 213, 121?
Answer: LCM of 643, 921, 213, 121 is 5087615973.
2. How to calculate the LCM of 643, 921, 213, 121?
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 643, 921, 213, 121.
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}.