Just finished calculating pi to 30 trillion places.

[JRace]

@KernelPanic: the first constant:

0.0002885855652225477 is being stored into pi as:
0.0002885855792555958




Edited to add: also, (Sqr(8) / 9801) = 0.0002885855792555958 according to QB64.
WolframAlpha says it's: 0.00028858556522254775

I haven't programmed square roots for string math yet, but with a precision calculator, sqrt(8) = 2.8284271247461900976

so with string math: 2.8284271247461900976 / 9801=0.00028858556522254775

0.00028858556522254775 (String math)

0.0002885855792555958  (QB64 reported by JRice)
0.00028858556522254775 (WolframAlpha)

So I would concur WolframAlpha is correct.

Pete

Yeah, looks like a precision issue, but the location of the discrepancy strikes me as odd.