Given numbers are 642,618,252,816

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

The LCM of 642,618,252,816 is 188855856.

Find LCM of 642,618,252,816 with Prime Factorization

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

2 x 2 x 3 x 107 x 103 x 21 x 68 = 188855856

Therefore, the lowest common multiple of 642,618,252,816 is 188855856.

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 618 x 252 x 816 = 81585729792

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

618 : 1, 2, 3, 6, 103, 206, 309, 618

252 : 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252

816 : 1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816

6 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 642,618,252,816, is 6.

Now, the common factors can be found like this.

642:2x 3x 107

618:2x 3x 103

252:2x 2x 3x 3x 7

816:2x 2x 2x 2x 3x 17

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

2x 2x 2x 3x 3 = 72

Therefore, the value for common factors is 72.

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 = 81585729792/(6x72)

LCM = 81585729792/432

LCM = 188855856

Thus, we can understand that the LCM of 642,618,252,816 is 188855856.

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

• LCM of 970, 270, 495, 347
• LCM of 961, 983, 161, 401
• LCM of 461, 333, 773, 381
• LCM of 582, 738, 526, 218
• LCM of 878, 473, 469, 694

1. What is the LCM of 642, 618, 252, 816?

Answer: LCM of 642, 618, 252, 816 is 188855856.

2. How to calculate the LCM of 642, 618, 252, 816?

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, 618, 252, 816.

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}.