This number is a prime.

+ 2273 = 3*7 + 7*11 + 13*17 + 19*23 + 37*41, where each of those products is of a pair of "Cousin primes" (pair of primes of the form n and n+4). Note that 2273 is prime. [Post]

+ The smallest prime-digit Honaker prime. Note that it is the 338th prime in the sequence of primes. [Loungrides]

(There are 3 curios for this number that have not yet been approved by an editor.)

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