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LCM of 861, 813, 972

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


Find the LCM of 861, 813, 972 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 861, 813, 972. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 861,813,972

Given numbers are 861,813,972

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

The LCM of 861,813,972 is 75599244.

Find LCM of 861,813,972 with Prime Factorization


3 861, 813, 972
287, 271, 324

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

3 x 287 x 271 x 324 = 75599244

Therefore, the lowest common multiple of 861,813,972 is 75599244.

LCM Formula to Find Lowest Common Multiple of 861,813,972

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.

861 x 813 x 972 = 680393196

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.

861 : 1, 3, 7, 21, 41, 123, 287, 861

813 : 1, 3, 271, 813

972 : 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972

3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 861,813,972, is 3.

Now, the common factors can be found like this.

861:3x 7x 41

813:3x 271

972:2x 2x 3x 3x 3x 3x 3

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

3 = 3

Therefore, the value for common factors is 3.

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 = 680393196/(3x3)

LCM = 680393196/9

LCM = 75599244

Thus, we can understand that the LCM of 861,813,972 is 75599244.

LCM of two or more Numbers Calculation Examples

Here are some samples of LCM of two or more Numbers calculations.

FAQs on LCM of 861, 813, 972

1. What is the LCM of 861, 813, 972?

Answer: LCM of 861, 813, 972 is 75599244.

2. How to calculate the LCM of 861, 813, 972?

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 861, 813, 972.

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}.