How to interpret the report

nimzo · 2004-09-02, 21:01

I have been running this calculation for months and I haven't a clue what has been done. What does the report say ? I don't understand what has been done all that time and what is the end result after all this computations
Thank you for your help
Gilles
===========

Mersenne PrimeNet Server 4.0 (Build 4.0.031)
Individual Account Report 02 Sep 2004 20:53 (Sep 2 2004 1:53PM Pacific)

All dates and times are Coordinated Universal Time (UTC)

EFF.org Research Discovery Prize is US $100,000 for first 10 million-digit prime

Account ID LL P90* Exponents Fact.P90 Exponents P90 CPU
CPU yrs LL Tested CPU yrs* w/ Factor hrs/day
-------------- ------- --------- -------- --------- -------
googolplex 3.346 1 0.002 0 312.01

Contact name : Gilles
Contact e-mail : googolplex@googolplex.net
Receive e-mail : YES
Last activity : 02 Sep 2004 20:07 UTC
Account created: 31 May 2004 20:40 UTC

------- Machines Assigned to PrimeNet -------

Intel Pentium 4 : 1
---------------------- -------
TOTAL, uniquely named : 1

------- Exponents Assigned -------

Assignment overdue check-in is set at 60.0 days (0.0 days to expire)

prime fact current days
exponent bits iteration run / to go / exp date updated date assigned computer ID Mhz Ver
-------- -- ---- --------- ----------------- --------------- --------------- ------------ ---- ---
25522919 68 19.8 29.1 78.1 02-Sep-04 20:07 14-Aug-04 02:40 CEF42F695 1406 v19/v20

Lucas-Lehmer testing : 1
Factoring only : 0
Double-checking LL : 0
---------------------- -------
TOTAL : 1

------- Exponents Cleared since last Synchronization -------

prime fact Lucas-Lehmer residue or factor
exponent bits [residues partially masked] date returned computer ID
-------- ---- -- -------------------------------- --------------- ------------
24723583 68 0xCB3B59B0BD123B__ 29-Aug-04 19:55 CEF42F695

Factored composite : 0
Lucas-Lehmer composite: 1
Double-checked LL : 0
---------------------- -------
TOTAL : 1

*P90 CPU time according to Woltman/Kurowski formulation. Calibrated by benchmark P5 90Mhz, 32.98 MFLOP units: 25658999 FLOP/0.778s (256k FFT).

(c)1997-2004 Entropia.com

Uncwilly · 2004-09-02, 22:00

I'll mark the points of interest in bold.

Quote:

Originally Posted by nimzo

Account ID LL P90* Exponents Fact.P90 Exponents P90 CPU
CPU yrs LL Tested CPU yrs* w/ Factor hrs/day
-------------- ------- --------- -------- --------- -------
googolplex 3.346 1 0.002 0 312.01

You as 'googolplex' have 3.346 'years' of credit. (Each is the equivalent of have an old Pentium 90MHz run all year on a calculation.)

Quote:

Originally Posted by nimzo

------- Machines Assigned to PrimeNet -------

Intel Pentium 4 : 1
---------------------- -------
TOTAL, uniquely named : 1

Your computer is a Pentium4 and it is the only one you run.

Quote:

Originally Posted by nimzo

------- Exponents Assigned -------

Assignment overdue check-in is set at 60.0 days (0.0 days to expire)

prime fact current days
exponent bits iteration run / to go / exp date updated date assigned computer ID Mhz Ver
-------- -- ---- --------- ----------------- --------------- --------------- ------------ ---- ---
25522919 68 19.8 29.1 78.1 02-Sep-04 20:07 14-Aug-04 02:40 CEF42F695 1406 v19/v20

Lucas-Lehmer testing : 1
Factoring only : 0
Double-checking LL : 0
---------------------- -------
TOTAL : 1

Your computer 'CEF42F695' has been working on 25522919 since 14-Aug-04 02:40

Quote:

Originally Posted by nimzo

------- Exponents Cleared since last Synchronization -------

prime fact Lucas-Lehmer residue or factor
exponent bits [residues partially masked] date returned computer ID
-------- ---- -- -------------------------------- --------------- ------------
24723583 68 0xCB3B59B0BD123B__ 29-Aug-04 19:55 CEF42F695

Factored composite : 0
Lucas-Lehmer composite: 1
Double-checked LL : 0
---------------------- -------
TOTAL : 1

You have calculated that (2^24723583)-1 is not prime, you computer CEF42F695 tunred that in 29-Aug-04 19:55.

You are doing quite fine. Every number shown to be not prime gets us closer to the next big prime.

marc · 2004-09-02, 22:02

Well at the bottom it says exponents cleared since last synchronization. You've cleared 1 exponent (24723583). Basically you've checked this number and proved that it isn't prime.

At the top is a table showing how much work you've done and which type of work. For example you've done over 3 years worth of Lucas Lehmer tests and a small bit of factoring. The 3 years is based on how long it would take a certain slower computer running at 90Mhz.

In the exponents assigned section you have a list of assignments you currently have. At the moment you have an exponent assigned to you for a Lucas Lehmer Test (this tells us just Prime or notPrime) and it has been running for about 20 days and is likely to take another 30 days to finish.

While the LL tests take the longest time they are the only way to find a record prime which is what most people are interested in. You may want to request only 10million digit exponents which start at approx 33000000 which are the smallest exponents which will enable you to win the major EFF prize and lots of money...

Alternatively if you like lots of feedback you could explore these forums and find a factoring project such as LMH or Mersenne-aries or if you aren't that interested in GIMPS then you could search for other types of primes in the 15k or 321 searches. These are smaller but less rare, they won't win you a prize but at least you have a much better chance of finding some.

nimzo · 2004-09-03, 00:42

Quote:

Originally Posted by Uncwilly

Your computer 'CEF42F695' has been working on 25522919 since 14-Aug-04 02:40

Thanks for your help. I don't understand something. If I started 25522919 on Aug-14 why am I at only at 0,27% (70000 iterations) at this time ? Is it restarting avery day? Maybe there is something wrong?

I'm running the computer around 8 hours a day.

Gilles

nimzo · 2004-09-03, 00:47

Quote:

Originally Posted by marc

Basically you've checked this number and proved that it isn't prime.

At the moment you have an exponent assigned to you for a Lucas Lehmer Test (this tells us just Prime or notPrime) and it has been running for about 20 days and is likely to take another 30 days to finish.

Thanks Marc.

If I understand correctly. The algorithm does not find the factors, it just checks if the factors exists or not (in which case it is a mersenne prime).

Gilles

markr · 2004-09-03, 02:03

25522919 was assigned to your computer on 14 August, but it didn't start work on it until it finished your first assignment, 24723583, which would have been just before that first LL result was reported on 29 August.

Your computer last checked in with PrimeNet on 2 September, which the report calls your last activity date. However there is no iteration data shown for 25522919, meaning it had only just started the LL test then.

You have 0.002 P90 cpu years of credit for factoring - this would be for two P-1 tests. (The credit for a P-1 test is always 0.001, regardless.) The P-1 test looks for factors of a certain kind and is done before the LL test. After it finished its first LL test, I suspect your computer did the P-1 test for 25522919, and reported the result on 2 September.

So that's why on 2 September, it had only just started the LL test. It's been busy!

2004-09-02, 21:01	#1
nimzo May 2004 Montreal, Quebec 2² Posts	How to interpret the report I have been running this calculation for months and I haven't a clue what has been done. What does the report say ? I don't understand what has been done all that time and what is the end result after all this computations Thank you for your help Gilles =========== Mersenne PrimeNet Server 4.0 (Build 4.0.031) Individual Account Report 02 Sep 2004 20:53 (Sep 2 2004 1:53PM Pacific) All dates and times are Coordinated Universal Time (UTC) EFF.org Research Discovery Prize is US $100,000 for first 10 million-digit prime Account ID LL P90* Exponents Fact.P90 Exponents P90 CPU CPU yrs LL Tested CPU yrs* w/ Factor hrs/day -------------- ------- --------- -------- --------- ------- googolplex 3.346 1 0.002 0 312.01 Contact name : Gilles Contact e-mail : googolplex@googolplex.net Receive e-mail : YES Last activity : 02 Sep 2004 20:07 UTC Account created: 31 May 2004 20:40 UTC ------- Machines Assigned to PrimeNet ------- Intel Pentium 4 : 1 ---------------------- ------- TOTAL, uniquely named : 1 ------- Exponents Assigned ------- Assignment overdue check-in is set at 60.0 days (0.0 days to expire) prime fact current days exponent bits iteration run / to go / exp date updated date assigned computer ID Mhz Ver -------- -- ---- --------- ----------------- --------------- --------------- ------------ ---- --- 25522919 68 19.8 29.1 78.1 02-Sep-04 20:07 14-Aug-04 02:40 CEF42F695 1406 v19/v20 Lucas-Lehmer testing : 1 Factoring only : 0 Double-checking LL : 0 ---------------------- ------- TOTAL : 1 ------- Exponents Cleared since last Synchronization ------- prime fact Lucas-Lehmer residue or factor exponent bits [residues partially masked] date returned computer ID -------- ---- -- -------------------------------- --------------- ------------ 24723583 68 0xCB3B59B0BD123B__ 29-Aug-04 19:55 CEF42F695 Factored composite : 0 Lucas-Lehmer composite: 1 Double-checked LL : 0 ---------------------- ------- TOTAL : 1 *P90 CPU time according to Woltman/Kurowski formulation. Calibrated by benchmark P5 90Mhz, 32.98 MFLOP units: 25658999 FLOP/0.778s (256k FFT). (c)1997-2004 Entropia.com

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2004-09-02, 22:02	#3
marc Jun 2004 UK 139 Posts	Well at the bottom it says exponents cleared since last synchronization. You've cleared 1 exponent (24723583). Basically you've checked this number and proved that it isn't prime. At the top is a table showing how much work you've done and which type of work. For example you've done over 3 years worth of Lucas Lehmer tests and a small bit of factoring. The 3 years is based on how long it would take a certain slower computer running at 90Mhz. In the exponents assigned section you have a list of assignments you currently have. At the moment you have an exponent assigned to you for a Lucas Lehmer Test (this tells us just Prime or notPrime) and it has been running for about 20 days and is likely to take another 30 days to finish. While the LL tests take the longest time they are the only way to find a record prime which is what most people are interested in. You may want to request only 10million digit exponents which start at approx 33000000 which are the smallest exponents which will enable you to win the major EFF prize and lots of money... Alternatively if you like lots of feedback you could explore these forums and find a factoring project such as LMH or Mersenne-aries or if you aren't that interested in GIMPS then you could search for other types of primes in the 15k or 321 searches. These are smaller but less rare, they won't win you a prize but at least you have a much better chance of finding some.

2004-09-03, 02:03	#6
markr "Mark" Feb 2003 Sydney 3·191 Posts	25522919 was assigned to your computer on 14 August, but it didn't start work on it until it finished your first assignment, 24723583, which would have been just before that first LL result was reported on 29 August. Your computer last checked in with PrimeNet on 2 September, which the report calls your last activity date. However there is no iteration data shown for 25522919, meaning it had only just started the LL test then. You have 0.002 P90 cpu years of credit for factoring - this would be for two P-1 tests. (The credit for a P-1 test is always 0.001, regardless.) The P-1 test looks for factors of a certain kind and is done before the LL test. After it finished its first LL test, I suspect your computer did the P-1 test for 25522919, and reported the result on 2 September. So that's why on 2 September, it had only just started the LL test. It's been busy!