The book is now available! 161
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ Every number greater than 161 is the sum of distinct primes of the form 6n - 1. [Wells]

+ The smallest semiprime that yields a palindromic prime when turned upside down. [Ondrejka]

+ The smallest phisemiprime: a semiprime formed by the initial digits of the decimal expansion of Golden Ratio. The sequence begins 161, 1618, 161803. 16180339887498948482, 16180339887498948482045868343 and so on. [Gupta]

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

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