Forum: Software
2003-06-05, 01:25
|
|
Replies: 1
Views: 847
You can DC exponents by unchecking "Request...
You can DC exponents by unchecking "Request whatever type of work makes the most sense" under "Test" "Primenet" and check "Request Mersenne numbers to doublecheck" only.
If you don't have Internet...
|
|
Forum: Software
2003-06-01, 15:22
|
|
Replies: 79
Views: 4,445
Just take a look at ftp://mersenne.org/gimps/....
Just take a look at ftp://mersenne.org/gimps/. There, you'll find several versions of Prime95/mprime/prp, sourcecodes, statistics ...
I thing the main reason for the homepage still offering v22 is...
|
|
Forum: Software
2003-05-17, 16:57
|
|
Replies: 1
Views: 1,124
Hi, ANDY!
Yes, the program does tell you,...
Hi, ANDY!
Yes, the program does tell you, whether a factor was found or if the mersenne you tested is prime. You can look up the meaning of program outputs in readme.txt and in the Online Help....
|
|
Forum: Math
2003-04-29, 19:47
|
|
Replies: 4
Views: 1,692
Yes, it is.
1/(n*(n+1))
=...
Yes, it is.
1/(n*(n+1))
= (n+1-n)/(n*(n+1))
= (n + 1)/(n*(n+1)) -n/(n*(n+1))
= 1/n - 1/(n+1)
So, the kth partial - sum has the value
1 - 1/(k+1)
|
|
Forum: Miscellaneous Math
2003-04-22, 13:18
|
|
Replies: 19
Views: 2,788
|
|
Forum: Miscellaneous Math
2003-04-21, 21:16
|
|
Replies: 19
Views: 2,788
|
|
Forum: Miscellaneous Math
2003-04-21, 18:46
|
|
Replies: 19
Views: 2,788
Hi, Joss!
This is just a special case of...
Hi, Joss!
This is just a special case of Fermat's Little Theorem:
"For all primes p and n in {1, 2, ... , p - 2, p - 1}:
ModPow(n, p - 1, p) = 1"
Unfortunately, you'd have to make at...
|
|
Forum: Lone Mersenne Hunters
2003-04-15, 15:36
|
|
Replies: 7
Views: 946
|
|
Forum: Lone Mersenne Hunters
2003-04-15, 14:14
|
|
Replies: 7
Views: 946
|
|
Forum: Math
2003-04-13, 23:49
|
|
Replies: 5
Views: 1,579
For another question I just found an answer on...
For another question I just found an answer on Chris Caldwell's PrimeGlossary (http://primes.utm.edu/glossary/page.php?sort=PalindromicPrime): do all palindromic primes have a p^n number of digits? -...
|
|
Forum: Math
2003-04-13, 08:34
|
|
Replies: 5
Views: 1,579
|
|
Forum: Math
2003-04-12, 17:55
|
|
Replies: 5
Views: 1,579
Palindromic Primes
Hi, all!
When dealing with primes, you often hear about twin primes and the twin prime conjecture. I'd like to know if there is a similar conjecture or even theorem dealing with palindromic primes...
|
|
Forum: Lounge
2003-04-12, 12:05
|
|
Replies: 9
Views: 2,077
|
|
Forum: Lounge
2003-04-12, 10:16
|
|
Replies: 9
Views: 2,077
|
|
Forum: Math
2003-04-11, 10:17
|
|
Replies: 36
Views: 2,805
Hi, flava!
Under ftp://mersenne.org/gimps/...
Hi, flava!
Under ftp://mersenne.org/gimps/ you can find
a) decomp.zip
-> a program to read out data from the following databases and its c-code
b) factors.zip
-> a database with the...
|
|
Forum: Lone Mersenne Hunters
2003-04-08, 16:44
|
|
Replies: 10
Views: 1,691
In other words:
when starting the next bit...
In other words:
when starting the next bit level, the "iteration counter" is reset whereas the timer is not.
:rolleyes:
sounds plausible.
BTW, the new power supply is installed, so factoring...
|
|
Forum: Lone Mersenne Hunters
2003-04-08, 10:18
|
|
Replies: 10
Views: 1,691
Hi LMHers!
It now seems to turn out as a...
Hi LMHers!
It now seems to turn out as a power supply problem.
The fan somehow denied service. When I fired up the machine, I got timings of about 140 ms / iter. Then timings switch to about 220...
|
|
Forum: Lone Mersenne Hunters
2003-04-08, 02:41
|
|
Replies: 10
Views: 1,691
faster factoring?
Hi, LMHers!
During my factoring work I noticed that factoring 2^60 to 2^61 and 2^61 to 2^62 had about the same per iteration time. Nevertheless, factoring over the 60-61/61-62 edge took roughly...
|
|
Forum: Lone Mersenne Hunters
2003-04-05, 01:01
|
|
Replies: 0
Views: 940
|
|
Forum: Math
2003-04-02, 01:28
|
|
Replies: 2
Views: 1,109
|
|
Forum: Teams
2003-03-26, 09:18
|
|
Replies: 2
Views: 2,647
Team overview
Hi all,
as it is common sense in the forums not to recruit participants for the teams, I'm not so sure about how many teams there are at the moment.
But I'd like to suggest a topic "current...
|
|
Forum: Hardware
2003-03-15, 04:21
|
|
Replies: 14
Views: 3,239
Hyperthreading
Hi Rick,
the Hyperthreading-ability of P4s has no relevance for Prime95 as it is so highly optimized that it already uses every spare CPU cycle. Running multiple copies of Prime95 would result in...
|
|
Forum: Math
2003-03-08, 17:03
|
|
Replies: 4
Views: 2,433
quantum computer
A quantum computer, if it can be realized, will be able to compute all primes up to a certain number of bits in one computation.
So the chance that the largest known prime is a mersenne would be...
|
|
Forum: Lounge
2003-02-24, 16:56
|
|
Replies: 13
Views: 1,606
page timer...
Hi Xyzzy,
I got about one eighth of a second on the heading-pages and about one fourth on forums with 2+ pages.
Let's see what the timings will be on 'rush hours'. :rolleyes:
But probably they'll...
|
|
Forum: Software
2003-02-06, 13:54
|
|
Replies: 9
Views: 1,433
Hi Hellfire,
the correct way to shut down...
Hi Hellfire,
the correct way to shut down Prime95 is to choose Exit in the Test-Menu.
The Quit GIMPS option in the Advanced-Menu is to inform the Server that you don't want any further...
|
