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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. The website Prime Curios! was launched the same year. [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.
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