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The 808th Fibonacci number plus and minus 808 results in (13^2)-digit primes, i.e., F(808)-808 and F(808)+808 are primes. Note that 808 is strobogrammatic. [Opao]

 

  Submitted: 2003-12-26 02:23:36;   Last Modified: 2008-01-30 11:28:00.



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