Contents

class Integer
  def sophie_germain_prime?
    prime? and (2*self).succ.prime?
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
numb-0.152.0	lib/numb/sophie_germain_prime.rb
numb-0.138.0	lib/numb/sophie_germain_prime.rb