The book is now available! 26718...31923 (69-digits)
(another Prime Pages' Curiosity)
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 267180205 2699155541 4111859611 1444784297 8302100885 5899099946 6998531923
+ The mean value of the first 16 prime factorials is prime: 267180205269915554141118596111444784297830210088558990999466998531923=(2!+3!+...+47!+53!)/16. [Gallardo]




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