# 1999

The least prime number such that the sum of its digits is a perfect number.

1999 = 2^{11} - 7^{2}. Note that any positive integer *n* that obeys the relationship *n*^{11} - 7^{n} is called a "convenience store number." [Pomerance]

The first megaprime was discovered in 1999. [Doyle]

The adventures of the TV show *Space: 1999* begin when
the Moon is hurled out of Earth's orbit, into deep space.

The smallest penultimate year of a millennium that is prime. [Astle]

The smallest invertible prime that yields another invertible prime when each digit *d* is repeated *d* times: 1999999999999999999999999999. [Beedassy]

1999 was the last time a blue moon appeared twice, in January and March.

CafePress was founded as a privately owned company in 1999 by Fred Durham and Maheesh Jain.

Prime Numbers Technology is led by Rock Blanco, who sold iBank Travel Management in 1999.

The site "Prime Curios!" was established in 1999. [Gudipati]

*La Symphonie Primordiale* (1999) is a single movement work
for orchestra. The title is something of a play on words,
'symphonie' taking up Stravinsky's 'sounding together of
instruments' in his Symphonies of Wind, but here relating
to a series of primordial (prime) numbers: the sounding
together of prime numbers.

Modulo 1999, the Fibonacci numbers have period of the beast. [Hasler]