The book is now available! 55350776431903243
(another Prime Pages' Curiosity)
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                                                          5535077 6431903243
+ Farideh Firoozbakht at the University of Isfahan, Iran, conjectured (circa 1982) that (pn)^{1/n} decreases as n increases (here pn is the nth prime). This has been tested up to pn = 55350776431903243.

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