irb(main):186:0> net_pack_bigint(92, 2)
=> "!}"
irb(main):187:0> net_unpack_bigint("!}")
=> 92
irb(main):188:0> net_pack_bigint(93, 2)
=> "\"!"
irb(main):189:0> net_unpack_bigint("\"!")
=> 1