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Smallest possible prime with at least 7 distinct digits that remains prime (leading zeros not allowed) when all occurrences of its digits d are deleted (i.e., primes 47671937, 47670937, 47671097, 76710937, 47710937, 461093 and 47671037). [De Geest]

 

  Submitted: 2000-09-25 20:44:48;   Last Modified: 2008-01-30 11:28:00.



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