Yet another pandigital approximation (just for fun)

[Gerson W. Barbosa]

(07-13-2014 09:03 PM)Thomas Klemm Wrote:  Very nice!

Thanks!

On the HP-32S:

2 LN LN pi / --> -1.16664686E-1

--> pi ~ 1/18750 - 60/7*ln(ln(2))

I only tried a pandigital form because I wrongly factored 18750 as 2*3*5^4 (actually 18750 is equal to 2*3*5^5, which made the task a little bit more difficult -- but that's what the properties of logarithms are for :-)