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It is hard to find larger non-semiprime intervals. More harder is to find an interval with no prime and no nonsemi-primes! The start of a record-breaking run of 53 consecutive integers (715466058-715466110). There are no primes and non-semiprimes. There are no greater runs less than 10^9. [Luhn]

 

  Submitted: 2004-10-10 12:57:57;   Last Modified: 2008-01-30 11:28:00.



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