The book is now available! 9871
(another Prime Pages' Curiosity)
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We will be updating our hardware on Thursday September 4 at about 9am CDT (2pm GMT).   Submissions will be turned off about one hour before that time.  Downtime should be brief.
Chris K. Caldwell <caldwell@utm.edu>

+ The largest 4-digit prime with 4 distinct digits. Curiously, it is also an emirp whose sum of digits is the square of a prime. [Post]

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