The book is now available! 777777722155555333
(another Prime Pages' Curiosity)
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                                                         77777772 2155555333
+ The largest prime with each noncomposite digit d repeated d times. Note that replacing digit 1 by 5 forms the largest prime (777777722555555333) with each prime digit d' repeated a number of times closest to and at least equal to d'. [Beedassy]

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