alt Hacker NewsI suspect that the length of the offset of your input data in pi is equal to the length of the input data itself, plus or minus a few bytes at most, regardless of the size of the input data.
That is: no compression, but it won't make things worse either.
Unless the input data is the digits of pi, obviously, or the result of some computation involving pi.
You could express the offset with scientific notation, tetration, and other big math number things. You probably don't need the whole offset number all at once!