Given numbers are 391,121,130,561

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

The LCM of 391,121,130,561 is 18451290.

Find LCM of 391,121,130,561 with Prime Factorization

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

11 x 17 x 23 x 11 x 130 x 3 = 18451290

Therefore, the lowest common multiple of 391,121,130,561 is 18451290.

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.

391 x 121 x 130 x 561 = 3450391230

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.

391 : 1, 17, 23, 391

121 : 1, 11, 121

130 : 1, 2, 5, 10, 13, 26, 65, 130

561 : 1, 3, 11, 17, 33, 51, 187, 561

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 391,121,130,561, is 1.

Now, the common factors can be found like this.

391:17x 23

121:11x 11

130:2x 5x 13

561:3x 11x 17

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

11x 17 = 187

Therefore, the value for common factors is 187.

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 = 3450391230/(1x187)

LCM = 3450391230/187

LCM = 18451290

Thus, we can understand that the LCM of 391,121,130,561 is 18451290.

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

• LCM of 839, 785, 596, 119
• LCM of 629, 116, 971, 656
• LCM of 246, 696, 107, 796
• LCM of 522, 997, 141, 100
• LCM of 190, 144, 808, 683

1. What is the LCM of 391, 121, 130, 561?

Answer: LCM of 391, 121, 130, 561 is 18451290.

2. How to calculate the LCM of 391, 121, 130, 561?

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 391, 121, 130, 561.

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}.