Given numbers are 646,538,421

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

The LCM of 646,538,421 is 73158854.

Find LCM of 646,538,421 with Prime Factorization

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

2 x 323 x 269 x 421 = 73158854

Therefore, the lowest common multiple of 646,538,421 is 73158854.

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.

646 x 538 x 421 = 146317708

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.

646 : 1, 2, 17, 19, 34, 38, 323, 646

538 : 1, 2, 269, 538

421 : 1, 421

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 646,538,421, is 1.

Now, the common factors can be found like this.

646:2x 17x 19

538:2x 269

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.

2 = 2

Therefore, the value for common factors is 2.

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 = 146317708/(1x2)

LCM = 146317708/2

LCM = 73158854

Thus, we can understand that the LCM of 646,538,421 is 73158854.

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

• LCM of 807, 227, 593
• LCM of 350, 371, 424
• LCM of 478, 707, 963
• LCM of 868, 906, 235
• LCM of 262, 479, 232

1. What is the LCM of 646, 538, 421?

Answer: LCM of 646, 538, 421 is 73158854.

2. How to calculate the LCM of 646, 538, 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 646, 538, 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}.