This is a new-user question.  I'm typing things in a workspace and 
sending them to the transcript (and, as it turns out, learning to use 
the debugger). I decided to challenge myself by reviewing some discrete 
mathematics.  So one statement read:

     (5 raisedTo: (r-1) modulo: r) = 1 ifFalse: [successFlag := false].

where r was big (in one of my tests it was 501659).  The debugger 
reported that the left hand side of the '=' sign evaluated to "01"--what 
does the leading '0' mean?  Why does the equality test fail?  Am I crazy?

Thanks,
Don