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The smallest Honaker prime with all the prime digits: 7523 is the 953rd prime and 7 + 5 + 2 + 3 = 9 + 5 + 3. Note that the latter sum 17 and the concatenation 7523953 are also primes, as are the reversals 3257, 359, 71. [Beedassy]

 

  Submitted: 2009-06-06 15:57:31;   Last Modified: 2014-07-20 22:48:28.



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