The book is now available! 19191...19191 (39-digits)
(just those submitted by Dubner)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

                                  191918080 8180919090 9090919081 8080819191

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

+ This palindromic Sophie Germain prime starts a Cunningham chain of three palindromic primes. [Dubner]

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