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LCM of 815, 578, 428, 981

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


Find the LCM of 815, 578, 428, 981 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 815, 578, 428, 981. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 815,578,428,981

Given numbers are 815,578,428,981

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

The LCM of 815,578,428,981 is 98893609380.

Find LCM of 815,578,428,981 with Prime Factorization


2 815, 578, 428, 981
815, 289, 214, 981

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

2 x 815 x 289 x 214 x 981 = 98893609380

Therefore, the lowest common multiple of 815,578,428,981 is 98893609380.

LCM Formula to Find Lowest Common Multiple of 815,578,428,981

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.

815 x 578 x 428 x 981 = 197787218760

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.

815 : 1, 5, 163, 815

578 : 1, 2, 17, 34, 289, 578

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

981 : 1, 3, 9, 109, 327, 981

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 815,578,428,981, is 1.

Now, the common factors can be found like this.

815:5x 163

578:2x 17x 17

428:2x 2x 107

981:3x 3x 109

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 = 197787218760/(1x2)

LCM = 197787218760/2

LCM = 98893609380

Thus, we can understand that the LCM of 815,578,428,981 is 98893609380.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 815, 578, 428, 981

1. What is the LCM of 815, 578, 428, 981?

Answer: LCM of 815, 578, 428, 981 is 98893609380.

2. How to calculate the LCM of 815, 578, 428, 981?

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 815, 578, 428, 981.

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}.