The book is now available! 309
(another Prime Pages' Curiosity)
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+ 309^3 + 309^0 + 309^9 is prime with prime digital length. [Patterson]

+ prime(309)^309 + 2 is prime. With the exception of 309, all known such numbers (up to 10000) are the first three primes. [Firoozbakht]




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