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LCM of 391, 382, 618, 643

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


Find the LCM of 391, 382, 618, 643 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, 382, 618, 643. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 391,382,618,643

Given numbers are 391,382,618,643

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

The LCM of 391,382,618,643 is 29676287694.

Find LCM of 391,382,618,643 with Prime Factorization


2 391, 382, 618, 643
391, 191, 309, 643

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

2 x 391 x 191 x 309 x 643 = 29676287694

Therefore, the lowest common multiple of 391,382,618,643 is 29676287694.

LCM Formula to Find Lowest Common Multiple of 391,382,618,643

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 382 x 618 x 643 = 59352575388

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

382 : 1, 2, 191, 382

618 : 1, 2, 3, 6, 103, 206, 309, 618

643 : 1, 643

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 391,382,618,643, is 1.

Now, the common factors can be found like this.

391:17x 23

382:2x 191

618:2x 3x 103

643:643

From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.

2 = 2

Therefore, the value for common factors is 2.

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 = 59352575388/(1x2)

LCM = 59352575388/2

LCM = 29676287694

Thus, we can understand that the LCM of 391,382,618,643 is 29676287694.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 391, 382, 618, 643

1. What is the LCM of 391, 382, 618, 643?

Answer: LCM of 391, 382, 618, 643 is 29676287694.

2. How to calculate the LCM of 391, 382, 618, 643?

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, 382, 618, 643.

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}.