The book is now available! 31111...11117 (219-digits)
(another Prime Pages' Curiosity)
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                                                                   311111111
1111111111 1111111111 1111111111 1111111111 1111111111 1111111111 1111111111
1111111111 1111111111 1111111111 1111111111 1111111111 1111111111 1111111111
1111111111 1111111111 1111111111 1111111111 1111111111 1111111111 1111111117
+ The first prime after 317 in the sequence 37, 317, 3117, 31117 etc.




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