3301

This number is a prime.

The smallest of three consecutive prime numbers that are also consecutive lucky numbers. [Harvey]

Cicada 3301 is a name given to an enigmatic organization that has posted a set of complex puzzles and alternate reality games on the internet to recruit codebreakers from the public.

The sum of the first 3301 positive repunits (i.e., 1+11+111+1111+...) is a 3301-digit prime number. Note that 3301 is the first prime of which this happens. [Antonious]