Suraj Kurapati:
> $ ruby -v
> ruby 1.8.4 (2005-12-24) [x86_64-linux]
> 
> $ irb
>>> 2956350890592680056.to_s(2)
> RangeError: integer 2956350890592680056 too big to convert to `int'

irb> "#{RUBY_VERSION} #{RUBY_PLATFORM} #{RUBY_RELEASE_DATE}"
  => "1.9.0 x86_64-linux 2006-10-16"
irb> 2956350890592680056.to_s(2)
  => "10100100000111000100010111100010111001001011111011100001111000"

irb> "#{RUBY_VERSION} #{RUBY_PLATFORM} #{RUBY_RELEASE_DATE}"
  => "1.8.4 x86_64-linux 2005-12-24"
irb> 2956350890592680056.to_s(2)
RangeError: integer 2956350890592680056 too big to convert to `int'
        from (irb):2:in `to_s'
        from (irb):2

Kalman