Given numbers are 638,407,257,432,248

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

The LCM of 638,407,257,432,248 is 40622904432.

Find LCM of 638,407,257,432,248 with Prime Factorization

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

2 x 2 x 2 x 11 x 29 x 37 x 257 x 54 x 31 = 40622904432

Therefore, the lowest common multiple of 638,407,257,432,248 is 40622904432.

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.

638 x 407 x 257 x 432 x 248 = 7149631180032

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.

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

407 : 1, 11, 37, 407

257 : 1, 257

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

248 : 1, 2, 4, 8, 31, 62, 124, 248

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,407,257,432,248, is 1.

Now, the common factors can be found like this.

638:2x 11x 29

407:11x 37

257:257

432:2x 2x 2x 2x 3x 3x 3

248:2x 2x 2x 31

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 11 = 176

Therefore, the value for common factors is 176.

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 = 7149631180032/(1x176)

LCM = 7149631180032/176

LCM = 40622904432

Thus, we can understand that the LCM of 638,407,257,432,248 is 40622904432.

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

• LCM of 717, 919, 721, 343, 893
• LCM of 518, 478, 191, 455, 846
• LCM of 361, 428, 123, 150, 887
• LCM of 570, 265, 157, 252, 441
• LCM of 538, 878, 162, 260, 291

1. What is the LCM of 638, 407, 257, 432, 248?

Answer: LCM of 638, 407, 257, 432, 248 is 40622904432.

2. How to calculate the LCM of 638, 407, 257, 432, 248?

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 638, 407, 257, 432, 248.

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}.