Guinness Book of Records??

[Henry Gould]

There is a claim of computing Pi to over 206 billion decimals (see
http://www.cecm.sfu.ca/personal/jborwein/Kanada_200b.html
for details.
The work was done by Yasumasa KANADA and Daisuke TAKAHASHI

Actually they claim 206,158,430,000 decimal digits of Pi.
They claim:

Optimized main program run:
Job start : 18th September 1999 19:00:52 (JST)
Job end : 20th September 1999 08:21:56 (JST)
Elapsed time : 37:21:04
Main memory : 865 GB (= 6.758 GB * 128)
Algorithm : Gauss-Legendre algorithm (Brent-Salamin)


------------------------------------------------------------------------
Optimized verification program run:
Job start : 26th June 1999 01:22:50 (JST)
Job end : 27th June 1999 23:30:40 (JST)
Elapsed time : 46:07:10
Main memory : 817 GB (= 6.383 GB * 128)
Algorithm : Borweins' 4-th order convergent algorithm

(Run the algorithm.)

The 19th iterate actually agrees with Pi to more than 750 billion digits.


So it seems that any listing of Pi i n the OEIS pales before this fantastic
computation which you and I cannot even download, and certainly
cannot print on paper.

I think there has to be some other way to make big claims about OEIS.

Decimally,

"H things taken W at a time" Gould





Floor en Lyanne van Lamoen wrote:

> Hi,
>
> I'd think that it is important to use the adjective "mathematical"
> somewhere. It makes it more interesting for the public, and besides, any
> electronic database is a database of integer sequences if we go to the
> hexadecimal or binary level.
>
> So:
>
> The largest database (or collection?) of mathematical integer sequences
> in the world.
>
> Floor.
>
> Jim Nastos wrote:
> >   I'd think the most reasonable measure for the OEIS to hold a record in
> > is exactly what the OEIS was set out to do: be the largest database of
> > integer sequences in the world.