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LCM of 781, 988, 422, 687

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


Find the LCM of 781, 988, 422, 687 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 781, 988, 422, 687. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 781,988,422,687

Given numbers are 781,988,422,687

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

The LCM of 781,988,422,687 is 111852879996.

Find LCM of 781,988,422,687 with Prime Factorization


2 781, 988, 422, 687
781, 494, 211, 687

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

2 x 781 x 494 x 211 x 687 = 111852879996

Therefore, the lowest common multiple of 781,988,422,687 is 111852879996.

LCM Formula to Find Lowest Common Multiple of 781,988,422,687

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.

781 x 988 x 422 x 687 = 223705759992

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.

781 : 1, 11, 71, 781

988 : 1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988

422 : 1, 2, 211, 422

687 : 1, 3, 229, 687

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 781,988,422,687, is 1.

Now, the common factors can be found like this.

781:11x 71

988:2x 2x 13x 19

422:2x 211

687:3x 229

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 = 223705759992/(1x2)

LCM = 223705759992/2

LCM = 111852879996

Thus, we can understand that the LCM of 781,988,422,687 is 111852879996.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 781, 988, 422, 687

1. What is the LCM of 781, 988, 422, 687?

Answer: LCM of 781, 988, 422, 687 is 111852879996.

2. How to calculate the LCM of 781, 988, 422, 687?

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 781, 988, 422, 687.

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}.