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LCM of 391, 640, 153, 711

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


Find the LCM of 391, 640, 153, 711 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 391, 640, 153, 711. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 391,640,153,711

Given numbers are 391,640,153,711

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

The LCM of 391,640,153,711 is 177920640.

Find LCM of 391,640,153,711 with Prime Factorization


3 391, 640, 153, 711
3 391, 640, 51, 237
17 391, 640, 17, 79
23, 640, 1, 79

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

3 x 3 x 17 x 23 x 640 x 1 x 79 = 177920640

Therefore, the lowest common multiple of 391,640,153,711 is 177920640.

LCM Formula to Find Lowest Common Multiple of 391,640,153,711

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.

391 x 640 x 153 x 711 = 27221857920

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.

391 : 1, 17, 23, 391

640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

153 : 1, 3, 9, 17, 51, 153

711 : 1, 3, 9, 79, 237, 711

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 391,640,153,711, is 1.

Now, the common factors can be found like this.

391:17x 23

640:2x 2x 2x 2x 2x 2x 2x 5

153:3x 3x 17

711:3x 3x 79

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 17 = 153

Therefore, the value for common factors is 153.

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 = 27221857920/(1x153)

LCM = 27221857920/153

LCM = 177920640

Thus, we can understand that the LCM of 391,640,153,711 is 177920640.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 391, 640, 153, 711

1. What is the LCM of 391, 640, 153, 711?

Answer: LCM of 391, 640, 153, 711 is 177920640.

2. How to calculate the LCM of 391, 640, 153, 711?

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 391, 640, 153, 711.

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}.