The book is now available! 727
(just those submitted by Silva)
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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 'Silva': (Click here to show all)

+ Probably the only palindromic prime that can be expressed by the form n!+(n+1). [Silva]

+ 727 starts the first chain of four palindromic primes, each formed from the previous one in forward and reverse order: 727, 72727, 727272727, 72727272727272727. [Silva]

+ The sum of the first five three-digit primes with midlle digit zero. [Silva]

(There are 5 curios for this number that have not yet been approved by an editor.)




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