The book is now available! 6252893229398
(another Prime Pages' Curiosity)
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                                                              625 2893229398
+ The start of a record-breaking run of 173 consecutive integers (6252893229398-6252893229570) that are non-semiprimes. The 2nd case of the same run is between 9189221611478-9189221611650. There are no greater runs less than 10^13 [Luhn]

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