Given numbers are 821,409,665,821

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

The LCM of 821,409,665,821 is 223299685.

Find LCM of 821,409,665,821 with Prime Factorization

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

821 x 1 x 409 x 665 x 1 = 223299685

Therefore, the lowest common multiple of 821,409,665,821 is 223299685.

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.

821 x 409 x 665 x 821 = 183329041385

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.

821 : 1, 821

409 : 1, 409

665 : 1, 5, 7, 19, 35, 95, 133, 665

821 : 1, 821

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 821,409,665,821, is 1.

Now, the common factors can be found like this.

821:821

409:409

665:5x 7x 19

821:821

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

821 = 821

Therefore, the value for common factors is 821.

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 = 183329041385/(1x821)

LCM = 183329041385/821

LCM = 223299685

Thus, we can understand that the LCM of 821,409,665,821 is 223299685.

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

• LCM of 272, 284, 497, 143
• LCM of 221, 385, 604, 877
• LCM of 909, 958, 690, 725
• LCM of 579, 773, 849, 558
• LCM of 978, 514, 294, 374

1. What is the LCM of 821, 409, 665, 821?

Answer: LCM of 821, 409, 665, 821 is 223299685.

2. How to calculate the LCM of 821, 409, 665, 821?

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 821, 409, 665, 821.

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}.