The book is now available! 528
(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 non-palindromic number whose sum of divisors is the same as the sum of divisors of its reverse, i.e., Sigma(528) = Sigma(825). [Gupta]

(There are 2 curios for this number that have not yet been approved by an editor.)




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