Calculate Ramanujan's constant (as described on the OEIS site) with at least
32 digits of precision, by the method of your choice. Optionally, if using the 𝑒**(π*√x) approach,
show that when evaluated with the last four Heegner numbers
the result is almost an integer.

require "bigdecimal/math"
include BigMath
 
e, pi = E(200), PI(200)
[19, 43, 67, 163].each do |x|
  puts "#{x}: #{(e ** (pi * BigMath.sqrt(BigDecimal(x), 200))).round(100).to_s("F")}"
end
 