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LCM of 644, 646, 777, 247

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


Find the LCM of 644, 646, 777, 247 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 644, 646, 777, 247. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 644,646,777,247

Given numbers are 644,646,777,247

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

The LCM of 644,646,777,247 is 300161316.

Find LCM of 644,646,777,247 with Prime Factorization


2 644, 646, 777, 247
7 322, 323, 777, 247
19 46, 323, 111, 247
46, 17, 111, 13

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

2 x 7 x 19 x 46 x 17 x 111 x 13 = 300161316

Therefore, the lowest common multiple of 644,646,777,247 is 300161316.

LCM Formula to Find Lowest Common Multiple of 644,646,777,247

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.

644 x 646 x 777 x 247 = 79842910056

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.

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

646 : 1, 2, 17, 19, 34, 38, 323, 646

777 : 1, 3, 7, 21, 37, 111, 259, 777

247 : 1, 13, 19, 247

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 644,646,777,247, is 1.

Now, the common factors can be found like this.

644:2x 2x 7x 23

646:2x 17x 19

777:3x 7x 37

247:13x 19

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

2x 7x 19 = 266

Therefore, the value for common factors is 266.

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 = 79842910056/(1x266)

LCM = 79842910056/266

LCM = 300161316

Thus, we can understand that the LCM of 644,646,777,247 is 300161316.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 644, 646, 777, 247

1. What is the LCM of 644, 646, 777, 247?

Answer: LCM of 644, 646, 777, 247 is 300161316.

2. How to calculate the LCM of 644, 646, 777, 247?

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 644, 646, 777, 247.

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}.