The book is now available! 155521
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ 15:55:21 is the largest emirp time in hours, minutes and seconds whose earlier displayed reversal 12:55:51 shows up anew on a 24-hour digit clock when turned upside down. [Beedassy]




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