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Single Curio View: (Seek other curios for this number) 6 + 1, 6 + 66 + 1, 6*66 + 1 , 6 + 66 + 666 + 1 and 6*66*666 + 1 are all primes. [Firoozbakht]
Submitted: 2003-11-20 07:37:42; Last Modified: 2009-04-02 06:03:33.
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