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(another Prime Pages' Curiosity)
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Heather Lundy © 2002
+ The smallest prime that is the sum of cubes of the first n primes (23 + 33 + 53 + 73). [Honaker]

+ According to the 2000 Wisden, the prime number 503 was the number of hours of sunshine in England's gloomiest summer of the 20th century (1954).

+ 503^5 + 503^0 + 503^3 is prime. It is the smallest prime with this property. [Firoozbakht]

+ Clark Kent's Metropolis apartment number in the "Superman" series. [Morse]

+ 5! + 0! + 3! is a three-digit Mersenne prime. [Morse]

+ Theatre503 is a performing arts venue in London that specializes in new work.

+ With 509, the smallest pair of consecutive sexy Cyclops primes. [Punches]

+ "503 Service Unavailable" is a HTTP error code that indicates a temporary server failure state due to overload or maintenance. [Beedassy]

+ The smallest prime of the form 2x-x, where x is a composite number. [Loungrides]

(There are 4 curios for this number that have not yet been approved by an editor.)

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