Given numbers are 643,420,328,331,187

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

The LCM of 643,420,328,331,187 is 1370704113240.

Find LCM of 643,420,328,331,187 with Prime Factorization

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

2 x 2 x 643 x 105 x 82 x 331 x 187 = 1370704113240

Therefore, the lowest common multiple of 643,420,328,331,187 is 1370704113240.

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.

643 x 420 x 328 x 331 x 187 = 5482816452960

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.

643 : 1, 643

420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420

328 : 1, 2, 4, 8, 41, 82, 164, 328

331 : 1, 331

187 : 1, 11, 17, 187

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 643,420,328,331,187, is 1.

Now, the common factors can be found like this.

643:643

420:2x 2x 3x 5x 7

328:2x 2x 2x 41

331:331

187:11x 17

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

2x 2 = 4

Therefore, the value for common factors is 4.

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 = 5482816452960/(1x4)

LCM = 5482816452960/4

LCM = 1370704113240

Thus, we can understand that the LCM of 643,420,328,331,187 is 1370704113240.

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

• LCM of 371, 978, 162, 390, 396
• LCM of 799, 483, 751, 881, 499
• LCM of 746, 108, 943, 752, 515
• LCM of 495, 495, 160, 434, 338
• LCM of 898, 746, 113, 299, 513

1. What is the LCM of 643, 420, 328, 331, 187?

Answer: LCM of 643, 420, 328, 331, 187 is 1370704113240.

2. How to calculate the LCM of 643, 420, 328, 331, 187?

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 643, 420, 328, 331, 187.

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}.