Given numbers are 681,1689

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

The LCM of 681,1689 is 383403.

Find LCM of 681,1689 with Prime Factorization

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

3 x 227 x 563 = 383403

Therefore, the lowest common multiple of 681,1689 is 383403.

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.

681 x 1689 = 1150209

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.

681 : 1, 3, 227, 681

1689 : 1, 3, 563, 1689

3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 681,1689, is 3.

Now, the common factors can be found like this.

681:3x 227

1689:3x 563

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

= 1

Therefore, the value for common factors is 1.

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 = 1150209/(3x1)

LCM = 1150209/3

LCM = 383403

Thus, we can understand that the LCM of 681,1689 is 383403.

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

• LCM of 862, 8637
• LCM of 273, 8107
• LCM of 951, 9867
• LCM of 470, 2446
• LCM of 248, 4244

1. What is the LCM of 681, 1689?

Answer: LCM of 681, 1689 is 383403.

2. How to calculate the LCM of 681, 1689?

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 681, 1689.

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}.