Wikipedia knows plenty: http://en.wikipedia.org/wiki/Magic_number_%28programming%29#Magic_debug_values http://en.wikipedia.org/wiki/Magic_number_%28programming%

Wikipedia knows plenty: http://en.wikipedia.org/wiki/Magic_number_%28programming%29#Magic_debug_values http://en.wikipedia.org/wiki/Magic_number_%28programming%29#.... My favorite is probably the classic 0xDEADF00D, but I also like 0xCAFEBABE as used by Java class files, and 0xFEEDFACE since it's just funny. True, these mostly stand out in hex, but they would be "very large" in decimal which often stands out pretty well.