A prime number embedded in the decimal expansion of . [Gardner]
The squares and cubes of this prime, in reverse
concatenation, are primes. [Silva]
The six-digit combination to Ellie's small office safe in the novel Contact by Carl Sagan.
314159 is a twin prime formed from three two-digit primes that are all members of twin prime pairs. [Silva]
Vasilios Gardiakos points out in his "Document Alpha" that 314159 is an emirp.
(There are 4 curios for this number that have not yet been approved by an editor.)