Given numbers are 642,856,478,742

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

The LCM of 642,856,478,742 is 227701992.

Find LCM of 642,856,478,742 with Prime Factorization

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

2 x 107 x 3 x 4 x 239 x 371 = 227701992

Therefore, the lowest common multiple of 642,856,478,742 is 227701992.

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 856 x 478 x 742 = 194912905152

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

856 : 1, 2, 4, 8, 107, 214, 428, 856

478 : 1, 2, 239, 478

742 : 1, 2, 7, 14, 53, 106, 371, 742

2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 642,856,478,742, is 2.

Now, the common factors can be found like this.

642:2x 3x 107

856:2x 2x 2x 107

478:2x 239

742:2x 7x 53

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 107 = 428

Therefore, the value for common factors is 428.

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 = 194912905152/(2x428)

LCM = 194912905152/856

LCM = 227701992

Thus, we can understand that the LCM of 642,856,478,742 is 227701992.

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

• LCM of 126, 352, 787, 827
• LCM of 565, 820, 922, 631
• LCM of 934, 450, 602, 616
• LCM of 115, 699, 381, 838
• LCM of 331, 963, 426, 236

1. What is the LCM of 642, 856, 478, 742?

Answer: LCM of 642, 856, 478, 742 is 227701992.

2. How to calculate the LCM of 642, 856, 478, 742?

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, 856, 478, 742.

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}.