Given numbers are 689,143,221

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

The LCM of 689,143,221 is 128843.

Find LCM of 689,143,221 with Prime Factorization

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

13 x 53 x 11 x 17 = 128843

Therefore, the lowest common multiple of 689,143,221 is 128843.

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.

689 x 143 x 221 = 21774467

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.

689 : 1, 13, 53, 689

143 : 1, 11, 13, 143

221 : 1, 13, 17, 221

13 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 689,143,221, is 13.

Now, the common factors can be found like this.

689:13x 53

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 = 21774467/(13x13)

LCM = 21774467/169

LCM = 128843

Thus, we can understand that the LCM of 689,143,221 is 128843.

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

• LCM of 423, 671, 695
• LCM of 809, 253, 674
• LCM of 692, 258, 776
• LCM of 783, 896, 970
• LCM of 777, 581, 713

1. What is the LCM of 689, 143, 221?

Answer: LCM of 689, 143, 221 is 128843.

2. How to calculate the LCM of 689, 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 689, 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}.