The book is now available! 373
(just those submitted by Rivera)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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

+ 373 is the only base 10 palindromic prime that remains a palindrome in three more bases less than 10: 9, 8 and 4 (454, 565 and 11311, respectively). [Rivera]

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