16 lines
232 B
Ruby
16 lines
232 B
Ruby
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require 'prime'
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limit = 42
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i = 42
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n = 0
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while n < limit do
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if i.prime? then
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n += 1
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puts "n = #{n}".ljust(7) + ":" + "#{i.to_s.reverse.scan(/\d{3}|.+/).join(",").reverse}".rjust(19)
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i += i
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else
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i += 1
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end
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end
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