The book is now available! 99999...77221 (27-digits)
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

                                               9999999 9933355555 7777777221
+ The largest prime made up of every digit d in which primes end, repeated d times each. [Beedassy]

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