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LCM of 128, 644, 999, 644

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


Find the LCM of 128, 644, 999, 644 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 128, 644, 999, 644. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 128,644,999,644

Given numbers are 128,644,999,644

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

The LCM of 128,644,999,644 is 20587392.

Find LCM of 128,644,999,644 with Prime Factorization


2 128, 644, 999, 644
2 64, 322, 999, 322
7 32, 161, 999, 161
23 32, 23, 999, 23
32, 1, 999, 1

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

2 x 2 x 7 x 23 x 32 x 1 x 999 x 1 = 20587392

Therefore, the lowest common multiple of 128,644,999,644 is 20587392.

LCM Formula to Find Lowest Common Multiple of 128,644,999,644

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.

128 x 644 x 999 x 644 = 53033121792

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.

128 : 1, 2, 4, 8, 16, 32, 64, 128

644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644

999 : 1, 3, 9, 27, 37, 111, 333, 999

644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 128,644,999,644, is 1.

Now, the common factors can be found like this.

128:2x 2x 2x 2x 2x 2x 2

644:2x 2x 7x 23

999:3x 3x 3x 37

644:2x 2x 7x 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 2x 2x 7x 23 = 2576

Therefore, the value for common factors is 2576.

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 = 53033121792/(1x2576)

LCM = 53033121792/2576

LCM = 20587392

Thus, we can understand that the LCM of 128,644,999,644 is 20587392.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 128, 644, 999, 644

1. What is the LCM of 128, 644, 999, 644?

Answer: LCM of 128, 644, 999, 644 is 20587392.

2. How to calculate the LCM of 128, 644, 999, 644?

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 128, 644, 999, 644.

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}.