Given numbers are 638,436,861

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

The LCM of 638,436,861 is 119751324.

Find LCM of 638,436,861 with Prime Factorization

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

2 x 319 x 218 x 861 = 119751324

Therefore, the lowest common multiple of 638,436,861 is 119751324.

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 436 x 861 = 239502648

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

436 : 1, 2, 4, 109, 218, 436

861 : 1, 3, 7, 21, 41, 123, 287, 861

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,436,861, is 1.

Now, the common factors can be found like this.

638:2x 11x 29

436:2x 2x 109

861:3x 7x 41

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

2 = 2

Therefore, the value for common factors is 2.

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 = 239502648/(1x2)

LCM = 239502648/2

LCM = 119751324

Thus, we can understand that the LCM of 638,436,861 is 119751324.

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

• LCM of 504, 817, 285
• LCM of 200, 838, 394
• LCM of 772, 939, 150
• LCM of 526, 225, 985
• LCM of 444, 247, 125

1. What is the LCM of 638, 436, 861?

Answer: LCM of 638, 436, 861 is 119751324.

2. How to calculate the LCM of 638, 436, 861?

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, 436, 861.

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}.