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  1. # your code goes here
  2.  
  3. require 'prime'
  4.  
  5. num = 1000
  6. num_sqrt = Math::sqrt(num).floor
  7.  
  8. puts Prime.take_while { |n| n < num }.select { |n| num % n == 0 }.last
Success #stdin #stdout 0.06s 9960KB
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https://ideone.com/6jN2Fm
language:
Ruby (ruby 2.5.5)
created:
8 years ago
visibility:
public

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