Given numbers are 642,331,394,646

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

The LCM of 642,331,394,646 is 13521714762.

Find LCM of 642,331,394,646 with Prime Factorization

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

2 x 321 x 331 x 197 x 323 = 13521714762

Therefore, the lowest common multiple of 642,331,394,646 is 13521714762.

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.

642 x 331 x 394 x 646 = 54086859048

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.

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

331 : 1, 331

394 : 1, 2, 197, 394

646 : 1, 2, 17, 19, 34, 38, 323, 646

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 642,331,394,646, is 1.

Now, the common factors can be found like this.

642:2x 3x 107

331:331

394:2x 197

646:2x 17x 19

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 = 54086859048/(1x4)

LCM = 54086859048/4

LCM = 13521714762

Thus, we can understand that the LCM of 642,331,394,646 is 13521714762.

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

• LCM of 106, 151, 875, 452
• LCM of 343, 631, 264, 310
• LCM of 890, 579, 391, 920
• LCM of 986, 764, 190, 790
• LCM of 975, 568, 360, 937

1. What is the LCM of 642, 331, 394, 646?

Answer: LCM of 642, 331, 394, 646 is 13521714762.

2. How to calculate the LCM of 642, 331, 394, 646?

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 642, 331, 394, 646.

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}.