Given numbers are 817,420,731

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

The LCM of 817,420,731 is 5833380.

Find LCM of 817,420,731 with Prime Factorization

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

43 x 19 x 420 x 17 = 5833380

Therefore, the lowest common multiple of 817,420,731 is 5833380.

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.

817 x 420 x 731 = 250835340

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.

817 : 1, 19, 43, 817

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

731 : 1, 17, 43, 731

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 817,420,731, is 1.

Now, the common factors can be found like this.

817:19x 43

420:2x 2x 3x 5x 7

731:17x 43

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

43 = 43

Therefore, the value for common factors is 43.

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 = 250835340/(1x43)

LCM = 250835340/43

LCM = 5833380

Thus, we can understand that the LCM of 817,420,731 is 5833380.

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

• LCM of 494, 309, 413
• LCM of 431, 714, 100
• LCM of 224, 236, 868
• LCM of 996, 933, 636
• LCM of 777, 441, 175

1. What is the LCM of 817, 420, 731?

Answer: LCM of 817, 420, 731 is 5833380.

2. How to calculate the LCM of 817, 420, 731?

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 817, 420, 731.

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}.