The book is now available! 577
(another Prime Pages' Curiosity)
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+ The first three digits in the decimal expansion of the Euler-Mascheroni constant (gamma = 0.5772156649...). It is not yet known if the constant is a rational number, i.e., the ratio of two integers a/b. [Kulsha]

+ 577 is one of only two numbers with squares of the form AABCBC. Can you find the other? [Axoy]

+ The number of isomers of the C60H3 Buckminsterfullerene soccerball-shaped molecule. [Beedassy]

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