The book is now available! 949
(another Prime Pages' Curiosity)
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+ The largest palindromic two-sided semiprime. [Gupta]

+ 949 is the only known multi-digit palindromic number m such that m*m! - prime(m) is prime. [Firoozbakht]

(There are 2 curios for this number that have not yet been approved by an editor.)

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