Dave wrote:

I prefer

4427007044615115050034854648525685871587
----------------------------------------
1409160108506276783085718440252375099653

as a rough approximation to Pi.





For sqrt(2),


16801980213452902006767691473844047811063360557160 1
---------------------------------------------------
11880794146294742246965551933607978236747301359246 0

is good enough for most engineering applications.

Anyone care to tell me what well known number this is a reasonable
approximation to?

19078001745537814647816786923051094576738662184691 34974601281
-------------------------------------------------------------
70184046208162524076589093068072649877753883914468 2132979719