Given numbers are 816,840,742,781

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

The LCM of 816,840,742,781 is 1182184080.

Find LCM of 816,840,742,781 with Prime Factorization

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

2 x 2 x 2 x 3 x 7 x 34 x 5 x 53 x 781 = 1182184080

Therefore, the lowest common multiple of 816,840,742,781 is 1182184080.

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.

816 x 840 x 742 x 781 = 397213850880

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.

816 : 1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816

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

742 : 1, 2, 7, 14, 53, 106, 371, 742

781 : 1, 11, 71, 781

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 816,840,742,781, is 1.

Now, the common factors can be found like this.

816:2x 2x 2x 2x 3x 17

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

742:2x 7x 53

781:11x 71

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 3x 7 = 336

Therefore, the value for common factors is 336.

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 = 397213850880/(1x336)

LCM = 397213850880/336

LCM = 1182184080

Thus, we can understand that the LCM of 816,840,742,781 is 1182184080.

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

• LCM of 725, 456, 244, 581
• LCM of 558, 255, 631, 572
• LCM of 687, 630, 123, 512
• LCM of 841, 736, 821, 741
• LCM of 389, 394, 568, 112

1. What is the LCM of 816, 840, 742, 781?

Answer: LCM of 816, 840, 742, 781 is 1182184080.

2. How to calculate the LCM of 816, 840, 742, 781?

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 816, 840, 742, 781.

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}.