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IP: PC World: Article on EFF Cooperative Comp. Awards


From: Dave Farber <farber () cis upenn edu>
Date: Fri, 14 May 1999 22:10:53 -0400




From: Alex Fowler <afowler () eff org>


http://www.pcworld.com:80/pcwtoday/article/0,1510,10890,00.html

From PC World Online
Together We Search, United We Find

Researchers think it's prime time for personal computers to work together,
and they're dangling big prizes.

by Jennifer Pelz, special to PC World
May 11, 1999, 3:00 a.m. PT

Somewhere near the edge of human imagination, there's a million-digit
number with a rare distinction. It is the biggest prime number ever
known--and it's waiting to be discovered.

And a San Francisco Internet group wants you to find it.

Don't worry, you don't have to do the math. Your computer will do it for
you in its spare time, experts say.

To demonstrate how personal computers can cooperate for the common good,
the Electronic Frontier Foundation is offering a $50,000 prize to the first
person to find a million-digit prime number, the mathematical term for
numbers like 2, 3, or 7027 that can't be divided evenly. The awards rise
for the first ten-million-digit prime and beyond.

They are part of a growing number of efforts to put the world's millions of
computers together to work for progress and profit.

Home PCs Do Their Bit

All it takes to try for the prime-number prize is a standard home computer.
A free program, available at Mersenne.org, will assign a number to test and
start the computer on its way.

Designed to be unobtrusive, the software works with power left over from
whatever else the computer is doing, explains George Woltman, the program's
author. If the computer is grappling with a big database, the
number-testing will go slowly. If the machine is idling, the program will
crank away as fast as it can.

But even when the computer is working, "most of the time, you're really not
using your computer very hard," says Woltman, a retired computer programmer
living in Orlando, Florida.

A PC with a 200-MHz Pentium processor can check out a number in about three
weeks, if it's running the entire time, he says. There are also versions of
the software for Macintosh and Linux operating systems.

Although it will work unnoticed, the software installs an icon that allows
the user to easily check its progress. If it finds the assigned number is
prime, "it'll go crazy and beep," Woltman says. "It'll let you know you've
gotten lucky."

Big Rewards

Roland Clarkson, a California college sophomore, got lucky this January.
Running Woltman's program, Clarkson's two 200-MHz computers found the
current record-holder, a prime number with 909,526 digits.

Clarkson's find is a number so huge that, written in a line of 12-point
type, it would stretch for nearly two and a half miles, according to
University of Tennessee math professor Chris Caldwell. And that's without
commas.

Except for 1, not a single other number can divide it without leaving a
remainder.

While such prime numbers are useful for code-writing, mathematicians admire
them for themselves. These rarities are the building blocks that make all
other numbers. And there's no formula to find them all, said Caldwell,
keeper of the Prime Pages, a Web list of all known prime numbers.

To Caldwell, hunting prime numbers makes is like collecting gems, ancient
coins, or first editions. "In all human endeavor, the more rare something
is, the more we value it," he explains.

About 8000 computers are now working on the Internet prime-number project,
Woltman said. They have joined the distinguished company of major
mathematicians and philosophers like Euclid and Descartes, who pondered
prime numbers, Caldwell said.

Effort's the Thing

But for the Electronic Frontier Foundation, the point is the effort, not
the potential find.

For one thing, the foundation wants idle computers to do something more
productive than running screen savers. The project also showcases the
social benefits and commercial potential of cobbling computers together,
says John Gilmore, one of the organization's founders.

"The way computers are linked now makes it possible to build supercomputers
out of ordinary ones...with some social cooperation," he says.

The prime-number hunters aren't alone in realizing it. Distributed.net, a
group of computer users around the globe, has worked on various
code-testing projects since 1997, in the interest of improving computer
security. The current project promises prizes of $1000 to $2000.

Meanwhile, astronomers at the University of California at Berkeley want
help scanning the skies for signs of intelligent life, as part of their
Search for Extraterrestrial Intelligence at Home project. The necessary
software--a screen saver that will analyze data from a giant telescope in
Puerto Rico--is scheduled to become available May 17 from the SETI at Home
Web site.

Ultimately, Gilmore suggests, there could even be a market for these
piecemeal supercomputers. He envisions businesses paying to have a network
of small computers work on big projects like animation, economic modeling
or testing product designs.


===----------------------------------------------===
  Alexander Fowler
  Director of Public Affairs
  Electronic Frontier Foundation

  E-mail: afowler () eff org
  Tel: 415 436 9333; Fax 415 436 9993

  You can find EFF on the Web at <http://www.eff.org>

  EFF supports the Global Internet Liberty Campaign
  <http://www.gilc.org>

===----------------------------------------------===


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