Given numbers are 392,390,381,691

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

The LCM of 392,390,381,691 is 6708145080.

Find LCM of 392,390,381,691 with Prime Factorization

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

2 x 3 x 196 x 65 x 127 x 691 = 6708145080

Therefore, the lowest common multiple of 392,390,381,691 is 6708145080.

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 390 x 381 x 691 = 40248870480

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

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

381 : 1, 3, 127, 381

691 : 1, 691

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 392,390,381,691, is 1.

Now, the common factors can be found like this.

392:2x 2x 2x 7x 7

390:2x 3x 5x 13

381:3x 127

691:691

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

2x 3 = 6

Therefore, the value for common factors is 6.

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 = 40248870480/(1x6)

LCM = 40248870480/6

LCM = 6708145080

Thus, we can understand that the LCM of 392,390,381,691 is 6708145080.

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

• LCM of 629, 142, 410, 371
• LCM of 940, 264, 881, 929
• LCM of 176, 210, 429, 567
• LCM of 386, 937, 475, 903
• LCM of 591, 723, 792, 448

1. What is the LCM of 392, 390, 381, 691?

Answer: LCM of 392, 390, 381, 691 is 6708145080.

2. How to calculate the LCM of 392, 390, 381, 691?

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, 390, 381, 691.

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}.