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LCM of 391, 243, 685, 123

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


Find the LCM of 391, 243, 685, 123 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 391, 243, 685, 123. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 391,243,685,123

Given numbers are 391,243,685,123

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

The LCM of 391,243,685,123 is 2668440105.

Find LCM of 391,243,685,123 with Prime Factorization


3 391, 243, 685, 123
391, 81, 685, 41

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

3 x 391 x 81 x 685 x 41 = 2668440105

Therefore, the lowest common multiple of 391,243,685,123 is 2668440105.

LCM Formula to Find Lowest Common Multiple of 391,243,685,123

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.

391 x 243 x 685 x 123 = 8005320315

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.

391 : 1, 17, 23, 391

243 : 1, 3, 9, 27, 81, 243

685 : 1, 5, 137, 685

123 : 1, 3, 41, 123

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 391,243,685,123, is 1.

Now, the common factors can be found like this.

391:17x 23

243:3x 3x 3x 3x 3

685:5x 137

123:3x 41

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 = 8005320315/(1x3)

LCM = 8005320315/3

LCM = 2668440105

Thus, we can understand that the LCM of 391,243,685,123 is 2668440105.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 391, 243, 685, 123

1. What is the LCM of 391, 243, 685, 123?

Answer: LCM of 391, 243, 685, 123 is 2668440105.

2. How to calculate the LCM of 391, 243, 685, 123?

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 391, 243, 685, 123.

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}.