808

This number is a composite.

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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 08:23:36; Last Modified: 2008-01-30 17:28:00.