Given numbers are 647,143,221

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

The LCM of 647,143,221 is 1572857.

Find LCM of 647,143,221 with Prime Factorization

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

13 x 647 x 11 x 17 = 1572857

Therefore, the lowest common multiple of 647,143,221 is 1572857.

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.

647 x 143 x 221 = 20447141

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.

647 : 1, 647

143 : 1, 11, 13, 143

221 : 1, 13, 17, 221

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 647,143,221, is 1.

Now, the common factors can be found like this.

647:647

143:11x 13

221:13x 17

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

13 = 13

Therefore, the value for common factors is 13.

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 = 20447141/(1x13)

LCM = 20447141/13

LCM = 1572857

Thus, we can understand that the LCM of 647,143,221 is 1572857.

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

• LCM of 518, 116, 439
• LCM of 297, 371, 264
• LCM of 905, 857, 552
• LCM of 655, 167, 801
• LCM of 237, 150, 486

1. What is the LCM of 647, 143, 221?

Answer: LCM of 647, 143, 221 is 1572857.

2. How to calculate the LCM of 647, 143, 221?

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 647, 143, 221.

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}.