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Mar 29th, 2017
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  1. In[1]:= HanteiQ[n_] :=
  2. Block[{m = n^2},
  3. PrimeQ[m + 1] && NextPrime[m + 1, 4] == m + 13 &&
  4. NextPrime[m + 13] == m + 27];
  5. Total[Select[Range[10, 150000000, 10], HanteiQ]] // Timing
  6.  
  7. Out[1]= {515.804, 676333270}
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