Thanks all!
Tip: Depending on how you solve, there may be garbage characters at start of code. Last 5 characters should be valid giveaway code.
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Bump for solved. Sleeping and being rested really helps :)
Happy birthday madjoki!
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The puzzle's beyond me, but birthday wishes aren't. Happy Birthday, madjoki! :D
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Thanks all again! (personal thanks are reversed for solvers xD)
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Solution:
Number was chosen in a way when coded as double-precision floating point number giveaway code would appear in it's binary representation.
Can be solved using for example
http://babbage.cs.qc.edu/courses/cs341/IEEE-754.html
http://gregstoll.dyndns.org/~gregstoll/floattohex/
http://www.binaryconvert.com/convert_double.html
These sites gives byte representation coded in hexadecimal (because usually text/ascii representation is garbage).
401D0054566C3871
Which in ascii is: @??TVl8q
http://www.steamgifts.com/giveaway/TVl8q/
Solving in coding is very simple too:
Reversing is needed because code was written in big-endian order due to sites above. It's more natural order for humans.
C#
foreach (var b in BitConverter.GetBytes(7.25032172236943583953916458995d).Reverse())
Console.Write((char)b);PHP
echo strrev(pack('d', 7.25032172236943583953916458995))Comment has been collapsed.
It's my birthday and I have very lousy giveaway for you. It's thought that counts right?
7.25032172236943583953916458995
Use this number to reach the giveaway, but do NOT round it on the way or you're screwed.
Solution in post.
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