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2222 = 21 + 22 + 23 + 25 + 27 + 211. Note that the number of 2s in the equation equals the larger of the prime exponents, which form a prime sequence, with the exception of '1.' [Gevisier]

 

  Submitted: 2001-04-04 16:43:09;   Last Modified: 2008-01-30 11:28:00.



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