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92 (another Prime Pages' Curiosity) |
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The smallest composite for which the reverse of its digits in hexadecimal, decimal, octal, and binary are all prime. [Wolfe] Twice the 92nd power of the 92nd prime minus one is prime (i.e., 2*p(92)^92-1 is prime). 92 is the largest such number less than a thousand. [Opao] 92 = prime(9*2) + prime(9+2). [Firoozbakht]
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