Given numbers are 638,412,878,421

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

The LCM of 638,412,878,421 is 24290391532.

Find LCM of 638,412,878,421 with Prime Factorization

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

2 x 319 x 206 x 439 x 421 = 24290391532

Therefore, the lowest common multiple of 638,412,878,421 is 24290391532.

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 412 x 878 x 421 = 97161566128

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

412 : 1, 2, 4, 103, 206, 412

878 : 1, 2, 439, 878

421 : 1, 421

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,412,878,421, is 1.

Now, the common factors can be found like this.

638:2x 11x 29

412:2x 2x 103

878:2x 439

421:421

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 = 97161566128/(1x4)

LCM = 97161566128/4

LCM = 24290391532

Thus, we can understand that the LCM of 638,412,878,421 is 24290391532.

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

• LCM of 912, 470, 132, 869
• LCM of 137, 576, 148, 427
• LCM of 947, 385, 316, 703
• LCM of 809, 153, 772, 448
• LCM of 757, 174, 618, 272

1. What is the LCM of 638, 412, 878, 421?

Answer: LCM of 638, 412, 878, 421 is 24290391532.

2. How to calculate the LCM of 638, 412, 878, 421?

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, 412, 878, 421.

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}.