The book is now available! 197
(just those submitted by Gallardo)
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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 'Gallardo': (Click here to show all)

+ 197 is the sum of digits of all two-digit primes. [Gallardo]

+ The smallest multidigit prime p that makes 10^p-9 prime. Note that the next prime (199) has the same property. They are twin primes! [Gallardo]

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