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Arno is the best

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Nov 23rd, 2017
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Python 0.45 KB | None | 0 0
  1.  
  2. def grootstePriemKleinerDanOfGelijkAan(grens):
  3.     if grens <= 1:
  4.         return nan
  5.     MijnArray = [True] * (grens + 1)
  6.     MijnArray[0] = False
  7.     MijnArray[1] = False
  8.  
  9.  
  10.     for i in range(2, len(MijnArray)):
  11.         if MijnArray[i]:
  12.             for j in range(2 * i, len(MijnArray), i):
  13.                 MijnArray[j] = False
  14.  
  15.     i = len(MijnArray)-1
  16.     while i > -1:
  17.         if MijnArray[i]:
  18.             return i
  19.         i = i - 1
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