Using exponents up to 30,000, primes of the form k • 2n ± 1 were calculated using
the latest version of the free OPENpfgw program available from
SourceForge.
More...
The Sydney PC User Group is an independent club of users discussing
all aspects of personal computers.
The members also help each other solve
computer problems. It has several Special Interest Groups or
SIGs including Genealogy, Digital Photography and Web Design. More...
This web-page was initially written with
NetObjects Fusion,
one of the programs used by the Web Design SIG. See the
Reports
for recent meeting information.
More recently I've written some Perl scripts to construct web-pages based
on tables of integer factors that I have discovered. More...
Use the inbuilt DOS ftp command to upload files
quickly from a batch file. If uploading different files each time,
however, use a Windows FTP program like the free
Core-FTP
program instead.
See what soft hyphens are all about. Enable
Javascript and check out your browser by loading this
test page. We check the Windows version of
Apple's Safari browser. More...
Check that you have valid HTML or XHTML code online
using the World Wide Web Consortium (W3C)
official site or offline using the free
CSE HTML Validator Lite
program. More...
A 116-digit personal
record prime factor has been found on
Wed Feb 15th, 2017. It divides the 233-digit
number 5 • 2790 + 1 = p116 • p117.
A 112-digit personal
record prime factor has been found on
Fri April 1st, 2016. It divides the 226-digit
number 7 • 2746 + 1 = p112 • p114.
Work is progressing on factorising numbers of the form
k • 2n ± 1
with k (odd) from 3 to 15 and n ≤ 1000. The results are
recorded by
Mikael Klasson. More...
Msieve, written by Jason Papadopoulos is described. It contains
fast code to solve large sets of linear equations. See the new
Perl script
to automate Msieve post-processing after a GGNFS
run. More...
