The book is now available! 1618
(another Prime Pages' Curiosity)
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Participate: 		+ The first four digits in the decimal expansion of the golden ratio (1618) is a Mersenne prime when turned upside down. [Wu]

+ The smallest factor of 1618! + 1 is 1618 + 1 or 1619, which is prime. Note that 1618 are the digits of Phi. [Gregor]

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