Given numbers are 840,712,403,646

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

The LCM of 840,712,403,646 is 9731434440.

Find LCM of 840,712,403,646 with Prime Factorization

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

2 x 2 x 2 x 105 x 89 x 403 x 323 = 9731434440

Therefore, the lowest common multiple of 840,712,403,646 is 9731434440.

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.

840 x 712 x 403 x 646 = 155702951040

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.

840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840

712 : 1, 2, 4, 8, 89, 178, 356, 712

403 : 1, 13, 31, 403

646 : 1, 2, 17, 19, 34, 38, 323, 646

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 840,712,403,646, is 1.

Now, the common factors can be found like this.

840:2x 2x 2x 3x 5x 7

712:2x 2x 2x 89

403:13x 31

646:2x 17x 19

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 2 = 16

Therefore, the value for common factors is 16.

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 = 155702951040/(1x16)

LCM = 155702951040/16

LCM = 9731434440

Thus, we can understand that the LCM of 840,712,403,646 is 9731434440.

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

• LCM of 498, 768, 737, 862
• LCM of 824, 526, 626, 333
• LCM of 177, 775, 622, 743
• LCM of 974, 663, 449, 719
• LCM of 980, 835, 752, 843

1. What is the LCM of 840, 712, 403, 646?

Answer: LCM of 840, 712, 403, 646 is 9731434440.

2. How to calculate the LCM of 840, 712, 403, 646?

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 840, 712, 403, 646.

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}.