The book is now available! 19999...99999 (54-digits)
(another Prime Pages' Curiosity)
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                 1999 9999999999 9999999999 9999999999 9999999999 9999999999
+ The largest near-repdigit prime, less than a googol, of the form p=2*10^n-1 (n=53). [Loungrides]




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