The Project Gutenberg EBook of Pi, by Scott Hemphill

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Title: Pi to 1,000,000 places

Author: Scott Hemphill

Release Date: June 20, 2008 [EBook #50]

Language: English

Character set encoding: ASCII

*** START OF THIS PROJECT GUTENBERG EBOOK PI ***

These digits came from Scott Hemphill (see forwarded message).

***Forwarded Messages From Our Original Source***

I computed the digits of pi using Borwein's method. I used a
divide-and-conquer multiply routine, hand coded in 68020 assembly
language. It was capable of multiplying two 1.25+ million digit
numbers in about 20 minutes on an HP 9000/370 (a 25MHz 68030?).
The computation took a little over three days, at which point I had
the answer in *binary*. :-( The binary to decimal conversion was
no simple task.

I checked my results by performing the same calculation to 2.5+
million digit precision, (9 days) and compared the binaries. The
only independent check has come from David Bailey, whose results
agree with mine to at least 1 million digits (probably.... The
last 100 digits are the same.)

Scott
--
Scott Hemphill hemphill@csvax.cs.caltech.edu
...!ames!elroy!cit-vax!hemphill

***End of Forwarded Messages***

The file should fit uncompressed on a 1.44M floppy, is a million
and a quarter digits of Pi. We are also working on one billion.
The tail has also been checked against the 400 million digits we
have already received from Mr. Kanada of Japan, and we also hope
to check against the figures we expect from the Chudovsky Bros.

The digits are arranged in groups of 1,000 in an array
of five sets of ten digits per line in twenty lines to
a screen with four blank lines between groups of 1,000
so search programs such as LIST can be used to scan in
page mode keeping the groups of 1,000 screen centered.

While we cannot guarantee accuracy, these figures have
been compared on several occasions with others and are
apparently in agreement. However, remember that there
is a possibility of transmission and other errors.

3.

1415926535 8979323846 2643383279 5028841971 6939937510
5820974944 5923078164 0628620899 8628034825 3421170679
8214808651 3282306647 09384