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LCM of 856, 387, 309, 645

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


Find the LCM of 856, 387, 309, 645 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 856, 387, 309, 645. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 856,387,309,645

Given numbers are 856,387,309,645

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

The LCM of 856,387,309,645 is 170605080.

Find LCM of 856,387,309,645 with Prime Factorization


3 856, 387, 309, 645
43 856, 129, 103, 215
856, 3, 103, 5

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

3 x 43 x 856 x 3 x 103 x 5 = 170605080

Therefore, the lowest common multiple of 856,387,309,645 is 170605080.

LCM Formula to Find Lowest Common Multiple of 856,387,309,645

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.

856 x 387 x 309 x 645 = 66024165960

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.

856 : 1, 2, 4, 8, 107, 214, 428, 856

387 : 1, 3, 9, 43, 129, 387

309 : 1, 3, 103, 309

645 : 1, 3, 5, 15, 43, 129, 215, 645

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 856,387,309,645, is 1.

Now, the common factors can be found like this.

856:2x 2x 2x 107

387:3x 3x 43

309:3x 103

645:3x 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 3x 43 = 387

Therefore, the value for common factors is 387.

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 = 66024165960/(1x387)

LCM = 66024165960/387

LCM = 170605080

Thus, we can understand that the LCM of 856,387,309,645 is 170605080.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 856, 387, 309, 645

1. What is the LCM of 856, 387, 309, 645?

Answer: LCM of 856, 387, 309, 645 is 170605080.

2. How to calculate the LCM of 856, 387, 309, 645?

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 856, 387, 309, 645.

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}.