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LCM of 991, 220, 129, 315, 641

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


Find the LCM of 991, 220, 129, 315, 641 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 991, 220, 129, 315, 641. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 991,220,129,315,641

Given numbers are 991,220,129,315,641

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

The LCM of 991,220,129,315,641 is 378584971380.

Find LCM of 991,220,129,315,641 with Prime Factorization


3 991, 220, 129, 315, 641
5 991, 220, 43, 105, 641
991, 44, 43, 21, 641

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

3 x 5 x 991 x 44 x 43 x 21 x 641 = 378584971380

Therefore, the lowest common multiple of 991,220,129,315,641 is 378584971380.

LCM Formula to Find Lowest Common Multiple of 991,220,129,315,641

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.

991 x 220 x 129 x 315 x 641 = 5678774570700

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.

991 : 1, 991

220 : 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220

129 : 1, 3, 43, 129

315 : 1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315

641 : 1, 641

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 991,220,129,315,641, is 1.

Now, the common factors can be found like this.

991:991

220:2x 2x 5x 11

129:3x 43

315:3x 3x 5x 7

641:641

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

3x 5 = 15

Therefore, the value for common factors is 15.

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 = 5678774570700/(1x15)

LCM = 5678774570700/15

LCM = 378584971380

Thus, we can understand that the LCM of 991,220,129,315,641 is 378584971380.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 991, 220, 129, 315, 641

1. What is the LCM of 991, 220, 129, 315, 641?

Answer: LCM of 991, 220, 129, 315, 641 is 378584971380.

2. How to calculate the LCM of 991, 220, 129, 315, 641?

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 991, 220, 129, 315, 641.

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}.