Given numbers are 217,721,987,856

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

The LCM of 217,721,987,856 is 2697676296.

Find LCM of 217,721,987,856 with Prime Factorization

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

7 x 31 x 103 x 141 x 856 = 2697676296

Therefore, the lowest common multiple of 217,721,987,856 is 2697676296.

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.

217 x 721 x 987 x 856 = 132186138504

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.

217 : 1, 7, 31, 217

721 : 1, 7, 103, 721

987 : 1, 3, 7, 21, 47, 141, 329, 987

856 : 1, 2, 4, 8, 107, 214, 428, 856

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 217,721,987,856, is 1.

Now, the common factors can be found like this.

217:7x 31

721:7x 103

987:3x 7x 47

856:2x 2x 2x 107

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

7x 7 = 49

Therefore, the value for common factors is 49.

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 = 132186138504/(1x49)

LCM = 132186138504/49

LCM = 2697676296

Thus, we can understand that the LCM of 217,721,987,856 is 2697676296.

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

• LCM of 838, 712, 705, 659
• LCM of 970, 463, 680, 110
• LCM of 354, 702, 931, 517
• LCM of 656, 294, 677, 334
• LCM of 222, 429, 960, 542

1. What is the LCM of 217, 721, 987, 856?

Answer: LCM of 217, 721, 987, 856 is 2697676296.

2. How to calculate the LCM of 217, 721, 987, 856?

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 217, 721, 987, 856.

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}.