Given numbers are 638,668,642,613

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

The LCM of 638,668,642,613 is 41930752116.

Find LCM of 638,668,642,613 with Prime Factorization

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

2 x 319 x 334 x 321 x 613 = 41930752116

Therefore, the lowest common multiple of 638,668,642,613 is 41930752116.

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.

638 x 668 x 642 x 613 = 167723008464

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.

638 : 1, 2, 11, 22, 29, 58, 319, 638

668 : 1, 2, 4, 167, 334, 668

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

613 : 1, 613

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,668,642,613, is 1.

Now, the common factors can be found like this.

638:2x 11x 29

668:2x 2x 167

642:2x 3x 107

613:613

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 = 167723008464/(1x4)

LCM = 167723008464/4

LCM = 41930752116

Thus, we can understand that the LCM of 638,668,642,613 is 41930752116.

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

• LCM of 389, 375, 729, 180
• LCM of 450, 768, 752, 451
• LCM of 701, 195, 593, 952
• LCM of 904, 195, 374, 774
• LCM of 500, 675, 842, 195

1. What is the LCM of 638, 668, 642, 613?

Answer: LCM of 638, 668, 642, 613 is 41930752116.

2. How to calculate the LCM of 638, 668, 642, 613?

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 638, 668, 642, 613.

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}.