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LCM of 639, 561, 649, 231

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


Find the LCM of 639, 561, 649, 231 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 639, 561, 649, 231. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 639,561,649,231

Given numbers are 639,561,649,231

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

The LCM of 639,561,649,231 is 49350609.

Find LCM of 639,561,649,231 with Prime Factorization


3 639, 561, 649, 231
11 213, 187, 649, 77
213, 17, 59, 7

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

3 x 11 x 213 x 17 x 59 x 7 = 49350609

Therefore, the lowest common multiple of 639,561,649,231 is 49350609.

LCM Formula to Find Lowest Common Multiple of 639,561,649,231

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.

639 x 561 x 649 x 231 = 53742813201

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.

639 : 1, 3, 9, 71, 213, 639

561 : 1, 3, 11, 17, 33, 51, 187, 561

649 : 1, 11, 59, 649

231 : 1, 3, 7, 11, 21, 33, 77, 231

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 639,561,649,231, is 1.

Now, the common factors can be found like this.

639:3x 3x 71

561:3x 11x 17

649:11x 59

231:3x 7x 11

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

3x 3x 11x 11 = 1089

Therefore, the value for common factors is 1089.

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 = 53742813201/(1x1089)

LCM = 53742813201/1089

LCM = 49350609

Thus, we can understand that the LCM of 639,561,649,231 is 49350609.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 639, 561, 649, 231

1. What is the LCM of 639, 561, 649, 231?

Answer: LCM of 639, 561, 649, 231 is 49350609.

2. How to calculate the LCM of 639, 561, 649, 231?

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 639, 561, 649, 231.

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}.