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LCM of 640, 426, 803, 605

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


Find the LCM of 640, 426, 803, 605 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 640, 426, 803, 605. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 640,426,803,605

Given numbers are 640,426,803,605

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

The LCM of 640,426,803,605 is 1204114560.

Find LCM of 640,426,803,605 with Prime Factorization


2 640, 426, 803, 605
5 320, 213, 803, 605
11 64, 213, 803, 121
64, 213, 73, 11

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

2 x 5 x 11 x 64 x 213 x 73 x 11 = 1204114560

Therefore, the lowest common multiple of 640,426,803,605 is 1204114560.

LCM Formula to Find Lowest Common Multiple of 640,426,803,605

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.

640 x 426 x 803 x 605 = 132452601600

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.

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

426 : 1, 2, 3, 6, 71, 142, 213, 426

803 : 1, 11, 73, 803

605 : 1, 5, 11, 55, 121, 605

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 640,426,803,605, is 1.

Now, the common factors can be found like this.

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

426:2x 3x 71

803:11x 73

605:5x 11x 11

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

2x 5x 11 = 110

Therefore, the value for common factors is 110.

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 = 132452601600/(1x110)

LCM = 132452601600/110

LCM = 1204114560

Thus, we can understand that the LCM of 640,426,803,605 is 1204114560.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 640, 426, 803, 605

1. What is the LCM of 640, 426, 803, 605?

Answer: LCM of 640, 426, 803, 605 is 1204114560.

2. How to calculate the LCM of 640, 426, 803, 605?

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 640, 426, 803, 605.

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}.