Given numbers are 392,417,128,921

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

The LCM of 392,417,128,921 is 802935168.

Find LCM of 392,417,128,921 with Prime Factorization

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

2 x 2 x 2 x 3 x 49 x 139 x 16 x 307 = 802935168

Therefore, the lowest common multiple of 392,417,128,921 is 802935168.

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.

392 x 417 x 128 x 921 = 19270444032

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.

392 : 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392

417 : 1, 3, 139, 417

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

921 : 1, 3, 307, 921

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 392,417,128,921, is 1.

Now, the common factors can be found like this.

392:2x 2x 2x 7x 7

417:3x 139

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

921:3x 307

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 3 = 24

Therefore, the value for common factors is 24.

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 = 19270444032/(1x24)

LCM = 19270444032/24

LCM = 802935168

Thus, we can understand that the LCM of 392,417,128,921 is 802935168.

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

• LCM of 697, 389, 706, 439
• LCM of 433, 634, 960, 343
• LCM of 439, 538, 915, 555
• LCM of 681, 140, 555, 276
• LCM of 840, 498, 991, 470

1. What is the LCM of 392, 417, 128, 921?

Answer: LCM of 392, 417, 128, 921 is 802935168.

2. How to calculate the LCM of 392, 417, 128, 921?

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 392, 417, 128, 921.

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}.