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LCM of 402, 913, 640, 781

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


Find the LCM of 402, 913, 640, 781 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 402, 913, 640, 781. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 402,913,640,781

Given numbers are 402,913,640,781

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

The LCM of 402,913,640,781 is 8338830720.

Find LCM of 402,913,640,781 with Prime Factorization


2 402, 913, 640, 781
11 201, 913, 320, 781
201, 83, 320, 71

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

2 x 11 x 201 x 83 x 320 x 71 = 8338830720

Therefore, the lowest common multiple of 402,913,640,781 is 8338830720.

LCM Formula to Find Lowest Common Multiple of 402,913,640,781

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.

402 x 913 x 640 x 781 = 183454275840

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.

402 : 1, 2, 3, 6, 67, 134, 201, 402

913 : 1, 11, 83, 913

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

781 : 1, 11, 71, 781

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 402,913,640,781, is 1.

Now, the common factors can be found like this.

402:2x 3x 67

913:11x 83

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

781:11x 71

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

2x 11 = 22

Therefore, the value for common factors is 22.

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 = 183454275840/(1x22)

LCM = 183454275840/22

LCM = 8338830720

Thus, we can understand that the LCM of 402,913,640,781 is 8338830720.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 402, 913, 640, 781

1. What is the LCM of 402, 913, 640, 781?

Answer: LCM of 402, 913, 640, 781 is 8338830720.

2. How to calculate the LCM of 402, 913, 640, 781?

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 402, 913, 640, 781.

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}.