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LCM of 638, 842, 345, 828

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


Find the LCM of 638, 842, 345, 828 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 638, 842, 345, 828. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 638,842,345,828

Given numbers are 638,842,345,828

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

The LCM of 638,842,345,828 is 555997860.

Find LCM of 638,842,345,828 with Prime Factorization


2 638, 842, 345, 828
3 319, 421, 345, 414
23 319, 421, 115, 138
319, 421, 5, 6

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

2 x 3 x 23 x 319 x 421 x 5 x 6 = 555997860

Therefore, the lowest common multiple of 638,842,345,828 is 555997860.

LCM Formula to Find Lowest Common Multiple of 638,842,345,828

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.

638 x 842 x 345 x 828 = 153455409360

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.

638 : 1, 2, 11, 22, 29, 58, 319, 638

842 : 1, 2, 421, 842

345 : 1, 3, 5, 15, 23, 69, 115, 345

828 : 1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 138, 207, 276, 414, 828

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,842,345,828, is 1.

Now, the common factors can be found like this.

638:2x 11x 29

842:2x 421

345:3x 5x 23

828:2x 2x 3x 3x 23

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

2x 2x 3x 23 = 276

Therefore, the value for common factors is 276.

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 = 153455409360/(1x276)

LCM = 153455409360/276

LCM = 555997860

Thus, we can understand that the LCM of 638,842,345,828 is 555997860.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 638, 842, 345, 828

1. What is the LCM of 638, 842, 345, 828?

Answer: LCM of 638, 842, 345, 828 is 555997860.

2. How to calculate the LCM of 638, 842, 345, 828?

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 638, 842, 345, 828.

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}.