The book is now available! 15555...22221 (71-digits)
(another Prime Pages' Curiosity)
Prime Curios!
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5555555555 5555555555 5558888888 8888888888 8888882222 2222222222 2222222221
+ A dihedral prime of prime length and prime sum of digits. Note also that each of the digits are repeated a prime number of times. [Patterson]

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