Given numbers are 321,406,990,421

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

The LCM of 321,406,990,421 is 9053095590.

Find LCM of 321,406,990,421 with Prime Factorization

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

2 x 3 x 107 x 203 x 165 x 421 = 9053095590

Therefore, the lowest common multiple of 321,406,990,421 is 9053095590.

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.

321 x 406 x 990 x 421 = 54318573540

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.

321 : 1, 3, 107, 321

406 : 1, 2, 7, 14, 29, 58, 203, 406

990 : 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990

421 : 1, 421

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 321,406,990,421, is 1.

Now, the common factors can be found like this.

321:3x 107

406:2x 7x 29

990:2x 3x 3x 5x 11

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 3 = 6

Therefore, the value for common factors is 6.

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 = 54318573540/(1x6)

LCM = 54318573540/6

LCM = 9053095590

Thus, we can understand that the LCM of 321,406,990,421 is 9053095590.

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

• LCM of 581, 530, 798, 994
• LCM of 861, 421, 699, 283
• LCM of 372, 238, 973, 157
• LCM of 963, 900, 854, 409
• LCM of 604, 526, 836, 263

1. What is the LCM of 321, 406, 990, 421?

Answer: LCM of 321, 406, 990, 421 is 9053095590.

2. How to calculate the LCM of 321, 406, 990, 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 321, 406, 990, 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}.