Given numbers are 639,71,981

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

The LCM of 639,71,981 is 69651.

Find LCM of 639,71,981 with Prime Factorization

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

3 x 3 x 71 x 1 x 1 x 109 = 69651

Therefore, the lowest common multiple of 639,71,981 is 69651.

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.

639 x 71 x 981 = 44506989

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.

639 : 1, 3, 9, 71, 213, 639

71 : 1, 71

981 : 1, 3, 9, 109, 327, 981

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 639,71,981, is 1.

Now, the common factors can be found like this.

639:3x 3x 71

71:71

981:3x 3x 109

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

3x 3x 71 = 639

Therefore, the value for common factors is 639.

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 = 44506989/(1x639)

LCM = 44506989/639

LCM = 69651

Thus, we can understand that the LCM of 639,71,981 is 69651.

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

• LCM of 753, 53, 115
• LCM of 220, 97, 275
• LCM of 302, 61, 772
• LCM of 175, 34, 587
• LCM of 543, 91, 519

1. What is the LCM of 639, 71, 981?

Answer: LCM of 639, 71, 981 is 69651.

2. How to calculate the LCM of 639, 71, 981?

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 639, 71, 981.

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}.