The book is now available! 12233...33221 (25-digits)
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

                                                 12233 3444455555 4444333221
+ A palindromic prime formed from the first five digits, where each digit d is repeated d times in ascending and descending order. [Silva]




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