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This is the smallest 4-digit prime that produces 5 other primes by changing only its first digit (i.e., 2297, 4297, 5297, 7297, 8297 are primes). [Opao]

 

  Submitted: 2004-02-22 07:07:32;   Last Modified: 2008-01-30 11:28:00.



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