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LCM of 688, 399, 393, 215

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


Find the LCM of 688, 399, 393, 215 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 688, 399, 393, 215. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 688,399,393,215

Given numbers are 688,399,393,215

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

The LCM of 688,399,393,215 is 179805360.

Find LCM of 688,399,393,215 with Prime Factorization


3 688, 399, 393, 215
43 688, 133, 131, 215
16, 133, 131, 5

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

3 x 43 x 16 x 133 x 131 x 5 = 179805360

Therefore, the lowest common multiple of 688,399,393,215 is 179805360.

LCM Formula to Find Lowest Common Multiple of 688,399,393,215

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.

688 x 399 x 393 x 215 = 23194891440

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.

688 : 1, 2, 4, 8, 16, 43, 86, 172, 344, 688

399 : 1, 3, 7, 19, 21, 57, 133, 399

393 : 1, 3, 131, 393

215 : 1, 5, 43, 215

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 688,399,393,215, is 1.

Now, the common factors can be found like this.

688:2x 2x 2x 2x 43

399:3x 7x 19

393:3x 131

215:5x 43

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

3x 43 = 129

Therefore, the value for common factors is 129.

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 = 23194891440/(1x129)

LCM = 23194891440/129

LCM = 179805360

Thus, we can understand that the LCM of 688,399,393,215 is 179805360.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 688, 399, 393, 215

1. What is the LCM of 688, 399, 393, 215?

Answer: LCM of 688, 399, 393, 215 is 179805360.

2. How to calculate the LCM of 688, 399, 393, 215?

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 688, 399, 393, 215.

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}.