Given numbers are 129,21,431

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

The LCM of 129,21,431 is 389193.

Find LCM of 129,21,431 with Prime Factorization

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

3 x 43 x 7 x 431 = 389193

Therefore, the lowest common multiple of 129,21,431 is 389193.

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.

129 x 21 x 431 = 1167579

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.

129 : 1, 3, 43, 129

21 : 1, 3, 7, 21

431 : 1, 431

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 129,21,431, is 1.

Now, the common factors can be found like this.

129:3x 43

21:3x 7

431:431

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

3 = 3

Therefore, the value for common factors is 3.

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 = 1167579/(1x3)

LCM = 1167579/3

LCM = 389193

Thus, we can understand that the LCM of 129,21,431 is 389193.

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

• LCM of 328, 16, 212
• LCM of 315, 22, 660
• LCM of 409, 35, 477
• LCM of 768, 15, 773
• LCM of 869, 88, 897

1. What is the LCM of 129, 21, 431?

Answer: LCM of 129, 21, 431 is 389193.

2. How to calculate the LCM of 129, 21, 431?

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 129, 21, 431.

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}.