Lua <= 4, Egor Skriptunoff
A lot of users were getting agitated about this answer in chat, so I must relieve them from their misery. I don't know Lua and wasn't able to test it, but I would be very surprised if this doesn't work.
4^~9
This would be pretty obvious, but probably no one got it because bitwise operators were only added in version 5.3; ideone.com only has version 5.2.
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