Given numbers are 638,171,845,133

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

The LCM of 638,171,845,133 is 645314670.

Find LCM of 638,171,845,133 with Prime Factorization

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

19 x 638 x 9 x 845 x 7 = 645314670

Therefore, the lowest common multiple of 638,171,845,133 is 645314670.

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 171 x 845 x 133 = 12260978730

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

171 : 1, 3, 9, 19, 57, 171

845 : 1, 5, 13, 65, 169, 845

133 : 1, 7, 19, 133

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,171,845,133, is 1.

Now, the common factors can be found like this.

638:2x 11x 29

171:3x 3x 19

845:5x 13x 13

133:7x 19

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

19 = 19

Therefore, the value for common factors is 19.

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 = 12260978730/(1x19)

LCM = 12260978730/19

LCM = 645314670

Thus, we can understand that the LCM of 638,171,845,133 is 645314670.

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

• LCM of 961, 640, 315, 126
• LCM of 870, 487, 699, 307
• LCM of 328, 919, 750, 268
• LCM of 522, 198, 841, 540
• LCM of 521, 252, 102, 960

1. What is the LCM of 638, 171, 845, 133?

Answer: LCM of 638, 171, 845, 133 is 645314670.

2. How to calculate the LCM of 638, 171, 845, 133?

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, 171, 845, 133.

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}.