Given numbers are 685,326,568,642

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

The LCM of 685,326,568,642 is 20357832840.

Find LCM of 685,326,568,642 with Prime Factorization

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

2 x 685 x 163 x 284 x 321 = 20357832840

Therefore, the lowest common multiple of 685,326,568,642 is 20357832840.

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.

685 x 326 x 568 x 642 = 81431331360

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.

685 : 1, 5, 137, 685

326 : 1, 2, 163, 326

568 : 1, 2, 4, 8, 71, 142, 284, 568

642 : 1, 2, 3, 6, 107, 214, 321, 642

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 685,326,568,642, is 1.

Now, the common factors can be found like this.

685:5x 137

326:2x 163

568:2x 2x 2x 71

642:2x 3x 107

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

2x 2 = 4

Therefore, the value for common factors is 4.

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 = 81431331360/(1x4)

LCM = 81431331360/4

LCM = 20357832840

Thus, we can understand that the LCM of 685,326,568,642 is 20357832840.

Here are some samples of LCM of two or more Numbers calculations.

• LCM of 653, 674, 149, 119
• LCM of 672, 765, 725, 519
• LCM of 304, 474, 180, 919
• LCM of 246, 363, 550, 803
• LCM of 138, 845, 886, 882

1. What is the LCM of 685, 326, 568, 642?

Answer: LCM of 685, 326, 568, 642 is 20357832840.

2. How to calculate the LCM of 685, 326, 568, 642?

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 685, 326, 568, 642.

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}.