The book is now available! 19191...77777 (33-digits)
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                                        191 9191919191 9777777777 7777777777
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Seven 19's followed by nineteen 7's is prime. [De Geest]

 

  Submitted: 2004-02-09 08:32:54;   Last Modified: 2008-01-30 11:28:00.



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