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LCM of 842, 764, 640, 842

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


Find the LCM of 842, 764, 640, 842 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 842, 764, 640, 842. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 842,764,640,842

Given numbers are 842,764,640,842

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

The LCM of 842,764,640,842 is 51463040.

Find LCM of 842,764,640,842 with Prime Factorization


2 842, 764, 640, 842
2 421, 382, 320, 421
421 421, 191, 160, 421
1, 191, 160, 1

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

2 x 2 x 421 x 1 x 191 x 160 x 1 = 51463040

Therefore, the lowest common multiple of 842,764,640,842 is 51463040.

LCM Formula to Find Lowest Common Multiple of 842,764,640,842

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.

842 x 764 x 640 x 842 = 346655037440

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.

842 : 1, 2, 421, 842

764 : 1, 2, 4, 191, 382, 764

640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

842 : 1, 2, 421, 842

2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 842,764,640,842, is 2.

Now, the common factors can be found like this.

842:2x 421

764:2x 2x 191

640:2x 2x 2x 2x 2x 2x 2x 5

842:2x 421

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 2x 421 = 3368

Therefore, the value for common factors is 3368.

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 = 346655037440/(2x3368)

LCM = 346655037440/6736

LCM = 51463040

Thus, we can understand that the LCM of 842,764,640,842 is 51463040.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 842, 764, 640, 842

1. What is the LCM of 842, 764, 640, 842?

Answer: LCM of 842, 764, 640, 842 is 51463040.

2. How to calculate the LCM of 842, 764, 640, 842?

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 842, 764, 640, 842.

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}.