"GIMPS"
(G
reat Internet Mersenne Prime Search)
'MATHEMATICAE  KUHMANN'
'On-line, 24 hours per day, 7-days per week - since 2008'
 
The "original" cluster of (4x refurbished), "Pentium III" computers [1x, 1GHz & 3x, 933 MHz].  
The Toshiba laptop serves as a "wireless-bridge" to the Internet (PCMCIA WiFi card + 10/100Mbit PCMCIA NIC card).
The CAT-V NIC (on the laptop), connects thru a cable to the gray-colored box (which is a 4-port, auto-sensing switch).
These desktops share just ONE: Windows keyboard; ms-mouse; and monitor - through the 4-port CYBEX switch-box.
N.B. All of this PC equipment was obtained at no cost and was rebuilt from spare-parts, and: online since Sept. 2008.
These aging PC's are still in operation. Added four (4) each, Intel Celeron-D 64bit 3.2GHz units in 2016 (Windows 10).

Take note of this "rats'-nest" of cables - needed, such that these five (5) computers can "talk" with each other...

NPR (National Public Radio): "Mining For The 'Prime' Jewels Of Numbers" [text] & [audio].

The LARGEST known Mersenne Prime [link]?

Here's the current cluster of recycled computers taking part in this project (for a total of 25 PC's, 34 active processor cores).
 Yes, there is a 24x7 alarm-system at my home-office - and yes, I am also "well" insured.   ;-)
And know (a GREEN conscience obliges)... all of the computers are configured in "Energy Star" mode.

Name


Count 

Cores

CPU model & cadence

GIMPS software version

WiFi-Bridge

1

N/A

Toshiba (laptop + PCMCIA card = wireless bridge)

N/A

GIMPS-00

1

1

 Intel Pentium III, 1.0Ghz

 Windows 32, Prime95, v27.9, build 1

GIMPS-01

1

1

 Intel Pentium III, 933MHz

 Windows 32, Prime95, v27.9, build 1

GIMPS-02

1

1

Intel Pentium III, 933MHz

Windows 32, Prime95, v27.9, build 1

GIMPS-03

1

1

Intel Pentium III, 933MHz

Windows 32, Prime95, v27.9, build 1

GIMPS-04

1

1

 Intel Pentium 4, 1.80GHz

 Windows 32, Prime95, v27.9, build 1

GIMPS-05

1

1

Intel Athlon XP 2400+ 2.00GHz

Windows 32, Prime95, v27.9, build 1

GIMPS-06

1

1

 Intel Celeron D, 3.2GHz

 Windows 64, Prime95, v28.9, build 2

GIMPS-07

1

1

Intel Pentium 4, 1.80GHz

Windows 32, Prime95, v28.5, build 2

GIMPS-08

1

1

 AMD Duron, 1.8GHz

 Windows 32, Prime95, v27.9, build 1

GIMPS-09

1

2

 AMD Athlon 64 dual-core, 3800+,  2.0Ghz

 Windows 64, Prime95, v28.1, build 1

GIMPS-10

1

1

 Intel Pentium 4, 2.66GHz

 Windows 32, Prime95, v27.9, build 1

GIMPS-11

1

1

 Intel Pentium 4, 2.66GHz

 Windows 32, Prime95, v27.9, build 1

GIMPS-12

1

2

AMD Athlon 64 dual-core, 5000+,  2.2Ghz

Windows 64, Prime95, v28.5, build 2

GIMPS-13

1

1

 Intel Celeron D, 3.20GHz

 Windows 32, Prime95, v28.9, build 2

GIMPS-14

1

1

 AMD Athlon 64 x1, 3000+, 2.0GHz

 Windows 64, Prime95, v27.9, build 1

GIMPS-15

1

1

 AMD Athlon 64 x1, 3000+, 2.0GHz

 Windows 64, Prime95, v27.9, build 1

GIMPS-16

1

2

 AMD Athlon 64 dual-core, 3800+,  2.0Ghz

 Windows 64, Prime95, v27.9, build 1

GIMPS-17

1

4

AMD Phenom 64 quad-core, 9650, 2.3Ghz

Windows 64, Prime95, v28.7, build 1

GIMPS-18

1

4

AMD Phenom 64 quad-core, 9550, 2.2Ghz

Windows 64, Prime95, v28.7, build 1

GIMPS-19

1

1

 Intel Celeron D, 3.20GHz

Windows 64, Prime95, v28.9, build 2

GIMPS-20

1

1

 Intel Celeron D, 3.20GHz

Windows 64, Prime95, v28.9, build 2

GIMPS-21

1

1

 Intel Celeron D, 3.20GHz

Windows 64, Prime95, v28.9, build 2

GIMPS-22

1

1

 Intel Celeron D, 3.20GHz

Windows 64, Prime95, v28.9, build 2

GIMPS-23

1

2

AMD Athlon 64 dual-core, 4200+,  2.2Ghz

Windows 64, Prime95, v28.10, build 1

-

25

34

-

-

The GIMPS website [link]  / GIMPS at Wikipedia [link].
Everything about "Mersenne Primes" [link]  /  and Number Theory [link].
[All of the equipment listed, was "recycled" at NO COST - then, refurbished and re-purposed by your host.]

Last updated: 03-Jul-2017


 Fearless, the GOOD guys Win!

Oh, say can you see... by the dawn's early light...
Site Privacy Statement 
Dot your eyes !  Terms and Conditions
Copyright 1999-2017 - Robert C. Kuhmann - All Rights Reserved
http://www.KUHMANN.com - QMann-at-Kuhmann.Com  (remove the "-at-" )

Graphics With Splash !Design by TechniQ U.S. Associates LLC