Given numbers are 686,677,638,391

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

The LCM of 686,677,638,391 is 57926891638.

Find LCM of 686,677,638,391 with Prime Factorization

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

2 x 343 x 677 x 319 x 391 = 57926891638

Therefore, the lowest common multiple of 686,677,638,391 is 57926891638.

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.

686 x 677 x 638 x 391 = 115853783276

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.

686 : 1, 2, 7, 14, 49, 98, 343, 686

677 : 1, 677

638 : 1, 2, 11, 22, 29, 58, 319, 638

391 : 1, 17, 23, 391

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 686,677,638,391, is 1.

Now, the common factors can be found like this.

686:2x 7x 7x 7

677:677

638:2x 11x 29

391:17x 23

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 = 115853783276/(1x2)

LCM = 115853783276/2

LCM = 57926891638

Thus, we can understand that the LCM of 686,677,638,391 is 57926891638.

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

• LCM of 918, 788, 348, 336
• LCM of 828, 869, 763, 545
• LCM of 524, 978, 921, 995
• LCM of 285, 196, 375, 872
• LCM of 382, 196, 706, 291

1. What is the LCM of 686, 677, 638, 391?

Answer: LCM of 686, 677, 638, 391 is 57926891638.

2. How to calculate the LCM of 686, 677, 638, 391?

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 686, 677, 638, 391.

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}.