Jacobi Symbols, due September 26

I think this will be a great section to talk about in class because the concepts weren't overly confusing, but the lecture will help me better understand the connections. Also, from now on, when we write (a/n) (and the context makes sense) is that just a symbol for (a/p1)^e1...(a/pk)^ek? The only thing I really see the Jacobi symbol useful for right now is as the shorthand way of writing the above, or for use in definition 5.3.1.4. Is it helpful in other ways? I kind of like the whole pseudoprimes just because I feel like the name actually kind of hints at what they are.