EDIT: I was a bit hasty and should've done more checking
The data I used was incorrect so this "message" isn't what I thought it was! See my next post below.
If you have some spare time
get pi accurate to about 500000 base29 digits using the standard digit definitions 09,AS so S is the MSD.
This message starts at the 321767th, 405982nd and 491416th digits.
Digits are numbered from after the integer 3 i.e. the fractional digits.
The first 20 base29 fractional digits of pi are:
Code: 
4328N0CJQMJQCB9I47BE 

What is the message?
I hope I got it right