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LCM of 646, 323, 987, 643

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


Find the LCM of 646, 323, 987, 643 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 646, 323, 987, 643. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 646,323,987,643

Given numbers are 646,323,987,643

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

The LCM of 646,323,987,643 is 409978086.

Find LCM of 646,323,987,643 with Prime Factorization


17 646, 323, 987, 643
19 38, 19, 987, 643
2, 1, 987, 643

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

17 x 19 x 2 x 1 x 987 x 643 = 409978086

Therefore, the lowest common multiple of 646,323,987,643 is 409978086.

LCM Formula to Find Lowest Common Multiple of 646,323,987,643

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.

646 x 323 x 987 x 643 = 132422921778

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.

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

323 : 1, 17, 19, 323

987 : 1, 3, 7, 21, 47, 141, 329, 987

643 : 1, 643

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 646,323,987,643, is 1.

Now, the common factors can be found like this.

646:2x 17x 19

323:17x 19

987:3x 7x 47

643:643

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

17x 19 = 323

Therefore, the value for common factors is 323.

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 = 132422921778/(1x323)

LCM = 132422921778/323

LCM = 409978086

Thus, we can understand that the LCM of 646,323,987,643 is 409978086.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 646, 323, 987, 643

1. What is the LCM of 646, 323, 987, 643?

Answer: LCM of 646, 323, 987, 643 is 409978086.

2. How to calculate the LCM of 646, 323, 987, 643?

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 646, 323, 987, 643.

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}.