[talanum1 (OP)]

The WOW signal reads: "6EQUJ5". It is not a stretch to read this as: "6 Equals J5". Now this is true if J is the "Successor of" operator (Aliens can have a different symbol for it). So the message reads: "6 = S5" which makes sense!

This is a profound signal!

[Bored chemist]

Not in the real world.