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LCM of 687, 340, 221, 516

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


Find the LCM of 687, 340, 221, 516 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 687, 340, 221, 516. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 687,340,221,516

Given numbers are 687,340,221,516

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

The LCM of 687,340,221,516 is 130571220.

Find LCM of 687,340,221,516 with Prime Factorization


2 687, 340, 221, 516
2 687, 170, 221, 258
3 687, 85, 221, 129
17 229, 85, 221, 43
229, 5, 13, 43

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

2 x 2 x 3 x 17 x 229 x 5 x 13 x 43 = 130571220

Therefore, the lowest common multiple of 687,340,221,516 is 130571220.

LCM Formula to Find Lowest Common Multiple of 687,340,221,516

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.

687 x 340 x 221 x 516 = 26636528880

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.

687 : 1, 3, 229, 687

340 : 1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340

221 : 1, 13, 17, 221

516 : 1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 258, 516

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 687,340,221,516, is 1.

Now, the common factors can be found like this.

687:3x 229

340:2x 2x 5x 17

221:13x 17

516:2x 2x 3x 43

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

2x 2x 3x 17 = 204

Therefore, the value for common factors is 204.

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 = 26636528880/(1x204)

LCM = 26636528880/204

LCM = 130571220

Thus, we can understand that the LCM of 687,340,221,516 is 130571220.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 687, 340, 221, 516

1. What is the LCM of 687, 340, 221, 516?

Answer: LCM of 687, 340, 221, 516 is 130571220.

2. How to calculate the LCM of 687, 340, 221, 516?

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 687, 340, 221, 516.

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}.