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LCM of 285, 561, 643, 171

Created By : Jatin Gogia
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023


Find the LCM of 285, 561, 643, 171 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 285, 561, 643, 171. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 285,561,643,171

Given numbers are 285,561,643,171

The least common multiple of numbers can be find using the prime factorization method or LCM formula.

The LCM of 285,561,643,171 is 102806055.

Find LCM of 285,561,643,171 with Prime Factorization


3 285, 561, 643, 171
19 95, 187, 643, 57
5, 187, 643, 3

Multiply the prime numbers at the bottom and the left side.

3 x 19 x 5 x 187 x 643 x 3 = 102806055

Therefore, the lowest common multiple of 285,561,643,171 is 102806055.

LCM Formula to Find Lowest Common Multiple of 285,561,643,171

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.

285 x 561 x 643 x 171 = 17579835405

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.

285 : 1, 3, 5, 15, 19, 57, 95, 285

561 : 1, 3, 11, 17, 33, 51, 187, 561

643 : 1, 643

171 : 1, 3, 9, 19, 57, 171

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 285,561,643,171, is 1.

Now, the common factors can be found like this.

285:3x 5x 19

561:3x 11x 17

643:643

171:3x 3x 19

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 19 = 171

Therefore, the value for common factors is 171.

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 = 17579835405/(1x171)

LCM = 17579835405/171

LCM = 102806055

Thus, we can understand that the LCM of 285,561,643,171 is 102806055.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 285, 561, 643, 171

1. What is the LCM of 285, 561, 643, 171?

Answer: LCM of 285, 561, 643, 171 is 102806055.

2. How to calculate the LCM of 285, 561, 643, 171?

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 285, 561, 643, 171.

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}.