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LCM of 398, 842, 940

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


Find the LCM of 398, 842, 940 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 398, 842, 940. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 398,842,940

Given numbers are 398,842,940

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

The LCM of 398,842,940 is 78752260.

Find LCM of 398,842,940 with Prime Factorization


2 398, 842, 940
199, 421, 470

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

2 x 199 x 421 x 470 = 78752260

Therefore, the lowest common multiple of 398,842,940 is 78752260.

LCM Formula to Find Lowest Common Multiple of 398,842,940

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.

398 x 842 x 940 = 315009040

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.

398 : 1, 2, 199, 398

842 : 1, 2, 421, 842

940 : 1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940

2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 398,842,940, is 2.

Now, the common factors can be found like this.

398:2x 199

842:2x 421

940:2x 2x 5x 47

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 = 315009040/(2x2)

LCM = 315009040/4

LCM = 78752260

Thus, we can understand that the LCM of 398,842,940 is 78752260.

LCM of two or more Numbers Calculation Examples

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FAQs on LCM of 398, 842, 940

1. What is the LCM of 398, 842, 940?

Answer: LCM of 398, 842, 940 is 78752260.

2. How to calculate the LCM of 398, 842, 940?

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 398, 842, 940.

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}.