The book is now available! 277777788888989
(just those submitted by Beedassy)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

                                                            27777 7788888989

Just showing those entries submitted by 'Beedassy': (Click here to show all)

+ The smallest prime with a multiplicative persistence (i.e., the number of times the digit product must be iterated in order to reach a single-digit product) of 11: 277777788888989 --> 4996238671872 --> 438939648 --> 4478976 --> 338688 --> 27648 --> 2688 --> 768 --> 336 --> 54 --> 20 --> 0. [Beedassy]




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