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LCM of 655, 428, 407, 686

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


Find the LCM of 655, 428, 407, 686 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 655, 428, 407, 686. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 655,428,407,686

Given numbers are 655,428,407,686

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

The LCM of 655,428,407,686 is 39135744340.

Find LCM of 655,428,407,686 with Prime Factorization


2 655, 428, 407, 686
655, 214, 407, 343

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

2 x 655 x 214 x 407 x 343 = 39135744340

Therefore, the lowest common multiple of 655,428,407,686 is 39135744340.

LCM Formula to Find Lowest Common Multiple of 655,428,407,686

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.

655 x 428 x 407 x 686 = 78271488680

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.

655 : 1, 5, 131, 655

428 : 1, 2, 4, 107, 214, 428

407 : 1, 11, 37, 407

686 : 1, 2, 7, 14, 49, 98, 343, 686

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 655,428,407,686, is 1.

Now, the common factors can be found like this.

655:5x 131

428:2x 2x 107

407:11x 37

686:2x 7x 7x 7

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

2 = 2

Therefore, the value for common factors is 2.

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 = 78271488680/(1x2)

LCM = 78271488680/2

LCM = 39135744340

Thus, we can understand that the LCM of 655,428,407,686 is 39135744340.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 655, 428, 407, 686

1. What is the LCM of 655, 428, 407, 686?

Answer: LCM of 655, 428, 407, 686 is 39135744340.

2. How to calculate the LCM of 655, 428, 407, 686?

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 655, 428, 407, 686.

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}.