The book is now available! 399
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ The smallest Lucas-Carmichael number.

+ 399 = 71 + 72 + 73 [Capelle]

+ The smallest number, all of whose prime factors are of form 4n+3, whose sum of distinct prime factors is prime: 3*7*19 = 399; 3+7+19 = 29. [Post]

(There is one curio for this number that has not yet been approved by an editor.)

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