October Novel Prep Challenge

Winner #27 is Elfycia Lee ☮ ! Now going to bed for a few days she states. Good night and sweet dreams of a wonderful NaNoWriMo! Congratulations!

A few facts about # 27:

* In decimal, it is the first composite number not divisible by any of its digits.

* It is the radix (base) of the septemvigesimal positional numeral system.

* 27 is the only positive integer that is 3 times the sum of its digits.

* In a prime reciprocal magic square of the multiples of 1/7, the magic constant is 27.

* Any multiple of 27 with 000 or 999 inserted yields another multiple of 27. For example, 20007, 29997, 54, 50004, and 59994 are all multiples of 27.

* Any multiple of 27 can be mirrored and spaced with a zero each for another multiple of 27. For example, 27 and 702, 54 and 405, and 378 and 80703 are all multiples of 27.

* In senary, one can readily test for divisibility by 43 (decimal 27) by seeing if the last three digits of the number match 000, 043, 130, 213, 300, 343, 430, or 513.

* 27 is divisible by the number of prime numbers below it.

* 27 is the only positive integer that is 3 times the sum of its digits.

* In a prime reciprocal magic square of the multiples of 1/7
, the magic constant is 27.

* Dark matter is thought to make up 27% of the universe.

* The New York Yankees have won 27 World Series championships, the most of any team in the MLB.

* In Stephen King's novel It, It returns every 27 years to Derry.

* Abbé Faria's prisoner number in the book The Count of Monte Cristo.