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LCM of 781, 821, 979, 648

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


Find the LCM of 781, 821, 979, 648 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 781, 821, 979, 648. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 781,821,979,648

Given numbers are 781,821,979,648

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

The LCM of 781,821,979,648 is 36979344072.

Find LCM of 781,821,979,648 with Prime Factorization


11 781, 821, 979, 648
71, 821, 89, 648

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

11 x 71 x 821 x 89 x 648 = 36979344072

Therefore, the lowest common multiple of 781,821,979,648 is 36979344072.

LCM Formula to Find Lowest Common Multiple of 781,821,979,648

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.

781 x 821 x 979 x 648 = 406772784792

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.

781 : 1, 11, 71, 781

821 : 1, 821

979 : 1, 11, 89, 979

648 : 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 781,821,979,648, is 1.

Now, the common factors can be found like this.

781:11x 71

821:821

979:11x 89

648:2x 2x 2x 3x 3x 3x 3

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

11 = 11

Therefore, the value for common factors is 11.

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 = 406772784792/(1x11)

LCM = 406772784792/11

LCM = 36979344072

Thus, we can understand that the LCM of 781,821,979,648 is 36979344072.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 781, 821, 979, 648

1. What is the LCM of 781, 821, 979, 648?

Answer: LCM of 781, 821, 979, 648 is 36979344072.

2. How to calculate the LCM of 781, 821, 979, 648?

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 781, 821, 979, 648.

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}.