The book is now available! 17171...71771 (38-digits)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

                                   17171717 1717171717 1717171717 1717171771
+ The only prime formed by inserting n n’s between a double-digit number n and its reversal, i.e., seventeen 17’s between 17 and 71. [Loungrides]

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