Ramanujan’s Constant

Try the expression
     163rp*x

which is the same as
   exp(sqrt(163)*pi)

This irrational value is very close to an integer (it has twelve consecutive “9” digits in the fraction part)

See more here about this value at Wolframs Mathworld.

Constructive Reals Calculator

The original applet using Constructive Reals (made by Hans J. Boehm) can be found here.

The entire calculator can be downloaded as a compressed tar file here.

Copyright
The calculator and library code is copyrighted by Silicon Graphics, Inc.
It may be used and redistributed subject to conditions specified
here and in the source files.