Given numbers are 128,691,390,694,864

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

The LCM of 128,691,390,694,864 is 53863505280.

Find LCM of 128,691,390,694,864 with Prime Factorization

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

2 x 2 x 2 x 2 x 2 x 3 x 4 x 691 x 65 x 347 x 9 = 53863505280

Therefore, the lowest common multiple of 128,691,390,694,864 is 53863505280.

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.

128 x 691 x 390 x 694 x 864 = 20683586027520

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.

128 : 1, 2, 4, 8, 16, 32, 64, 128

691 : 1, 691

390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

694 : 1, 2, 347, 694

864 : 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 72, 96, 108, 144, 216, 288, 432, 864

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 128,691,390,694,864, is 1.

Now, the common factors can be found like this.

128:2x 2x 2x 2x 2x 2x 2

691:691

390:2x 3x 5x 13

694:2x 347

864:2x 2x 2x 2x 2x 3x 3x 3

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

2x 2x 2x 2x 2x 2x 2x 3 = 384

Therefore, the value for common factors is 384.

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 = 20683586027520/(1x384)

LCM = 20683586027520/384

LCM = 53863505280

Thus, we can understand that the LCM of 128,691,390,694,864 is 53863505280.

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

• LCM of 362, 636, 986, 662, 445
• LCM of 167, 952, 885, 469, 396
• LCM of 671, 408, 958, 909, 340
• LCM of 604, 669, 222, 233, 911
• LCM of 783, 702, 968, 513, 228

1. What is the LCM of 128, 691, 390, 694, 864?

Answer: LCM of 128, 691, 390, 694, 864 is 53863505280.

2. How to calculate the LCM of 128, 691, 390, 694, 864?

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 128, 691, 390, 694, 864.

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}.