The book is now available! 659
(another Prime Pages' Curiosity)
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Participate: 		+ 659/6=109, 659/5=131, 659/9=73. All prime. 23 also has this property. Are there others? (No 0's or 1's in the candidate!) [Wood]

+ The first occurrence of a twin prime pair (659, 661) one of which is strobogrammatic and the other one invertible when read on a calculator (7-segment digital display). Note that the latter when turned upside down becomes also the larger member of another twin prime pair (197, 199). [Beedassy]

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