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Search: Posts Made By: kar_bon
Forum: Proth Prime Search 2021-12-02, 08:04
Replies: 13
Views: 19,463
Posted By kar_bon
...but it's a Proth-type prime, not Riesel, false...

...but it's a Proth-type prime, not Riesel, false thread.

Moderator note: Previous post moved from Riesel thread and parked in this one
Forum: And now for something completely different 2021-12-01, 17:39
Replies: 8
Views: 1,801
Posted By kar_bon
17*18^19-1 is not prime, so your b is 19...

17*18^19-1 is not prime, so your b is 19 ('https://www.rieselprime.de/ziki/Williams_prime_MM_19') not 18. Same for b=5 and b=2 is also a prime for the first form.

So:
(b-1)*b^(b+1) - 1 is prime...
Forum: Information & Answers 2021-11-29, 13:38
Replies: 18
Views: 1,253
Posted By kar_bon
You could use PFGW with this script: ABC2 $a...

You could use PFGW with this script:

ABC2 $a & $a+2 & $a+20
a: from 1 to 20000 step 2


This will find all triples to n=20k within a minute!
The log file "pfgw-prime.log" will contain all...
Forum: Proth Prime Search 2021-10-20, 14:04
Replies: 12
Views: 1,331
Posted By kar_bon
None of your given small primes are a divisor of...

None of your given small primes are a divisor of any Generalized Fermat number ('https://www.rieselprime.de/ziki/Generalized_Fermat_number').
Forum: Proth Prime Search 2021-10-19, 04:58
Replies: 12
Views: 1,331
Posted By kar_bon
Please give search ranges for the n-values done.

Please give search ranges for the n-values done.
Forum: Sierpinski/Riesel Base 5 2021-10-13, 13:32
Replies: 5
Views: 17,812
Posted By kar_bon
A new prime for the Riesel side was found: ...

A new prime for the Riesel side was found:

102818 *5^3440382-1 ('https://primes.utm.edu/primes/page.php?id=132817') is prime.

There're still values in progress for this k by PrimGrid, so the...
Forum: No Prime Left Behind 2021-10-13, 05:08
Replies: 276
Views: 85,322
Posted By kar_bon
Riesel k=401 is reserved by NPLB Drive #13...

Riesel k=401 is reserved by NPLB Drive #13 ('https://www.rieselprime.de/ziki/Riesel_prime_2_401') and is already done to ~1.63M so far.
See the Wiki for currently available low k-values please.
Forum: Conjectures 'R Us 2021-10-07, 04:52
Replies: 115
Views: 38,694
Posted By kar_bon
Wiki for small Proth primes, least n-values...

Wiki for small Proth primes, least n-values ('https://www.rieselprime.de/ziki/Proth_prime_small_bases_least_n') updated with 8*908^243439+1.
Top5000 gives "Anonymous" as finder, different from here...
Forum: Prime Wiki 2021-09-23, 11:41
Replies: 193
Sticky: Prime-Wiki
Views: 67,831
Posted By kar_bon
The abbreviations inserted in the table header...

The abbreviations inserted in the table header cells seems helpful on one side but explodes the code and makes it harder to read/edit on the other side.
Another question on my side: It seems...
Forum: Prime Wiki 2021-09-23, 07:56
Replies: 193
Sticky: Prime-Wiki
Views: 67,831
Posted By kar_bon
Although it's only one letter (difference in...

Although it's only one letter (difference in wording of "in" instead "on") where I thinks it's not worth to discuss, but I've done this:

I've changed the phrase on top of the table in "There are...
Forum: And now for something completely different 2021-09-13, 07:59
Replies: 253
Views: 49,867
Posted By kar_bon
CK 688

(688^85121+1)^2-2 is prime (483077 digits, ~4000 digits too small for Top5000)

PFGW Version 4.0.0.64BIT.20190528.Win_Dev [GWNUM 29.8]

Primality testing (688^85121+1)^2-2 [N-1/N+1,...
Forum: Software 2021-09-09, 11:59
Replies: 7
Views: 651
Posted By kar_bon
Use awk (gawk for WIN): create file list.awk...

Use awk (gawk for WIN):

create file list.awk with code:

BEGIN {line=$0}
{
if (index($0,"Complete Set"))
print substr(line,1,index(line,"+")-1)
line=$0
}
Forum: Riesel Prime Search 2021-09-08, 05:06
Replies: 1,976
Views: 227,092
Posted By kar_bon
Should read "321 Prime Search...

Should read "321 Prime Search ('https://www.primegrid.com/primes/primes.php?project=321&factors=XGF&only=ALL&announcements=ALL&sortby=size&dc=no&search=') i.e. 3*2k±1" so the PrimeGrid Prime Search...
Forum: Prime Wiki 2021-08-26, 14:34
Replies: 193
Sticky: Prime-Wiki
Views: 67,831
Posted By kar_bon
Today: 2^13 = 8192 pages in the Wiki and counting!

Today: 2^13 = 8192 pages in the Wiki and counting!
Forum: Prime Wiki 2021-08-15, 15:06
Replies: 193
Sticky: Prime-Wiki
Views: 67,831
Posted By kar_bon
There're sure many Riesel or Proth primes at UTM...

There're sure many Riesel or Proth primes at UTM which are not in the RPPDb. Many of them are only as the mentioned for only one n-value (constant n-searches or like) and were not at high priority to...
Forum: Conjectures 'R Us 2021-08-15, 13:39
Replies: 999
Views: 125,339
Posted By kar_bon
It's the 2nd Riesel Problem...

It's the 2nd Riesel Problem ('https://www.rieselprime.de/ziki/Riesel_problem_2nd').
Forum: Prime Wiki 2021-08-13, 13:29
Replies: 193
Sticky: Prime-Wiki
Views: 67,831
Posted By kar_bon
The moving of all Riesel type values and filling...

The moving of all Riesel type values and filling the new parameter for the base into those pages is done.
Many thanks to the bot from Happy5214 to do the task more automated.

All other things...
Forum: Software 2021-08-07, 12:45
Replies: 42
Views: 2,983
Posted By kar_bon
In my Wiki I've the option to include all...

In my Wiki I've the option to include all languages by using an own page.

For example I've just created a page for the readme.txt ('https://www.rieselprime.de/ziki/Readme.txt') file with just...
Forum: Prime Wiki 2021-07-29, 08:47
Replies: 44
Views: 2,777
Posted By kar_bon
First I want to include more data from my old...

First I want to include more data from my old pages and perhaps all for Proth k<10000, current works of PrimeGrid, who don't got any condensed presentation of the primes found from the beginning of...
Forum: Riesel Prime Search 2021-07-27, 09:07
Replies: 439
Views: 86,008
Posted By kar_bon
Reservation cancelled. For further...

Reservation cancelled.

For further searchers:
- have a look at my old pages ('https://www.rieselprime.de/default.htm') (no more updates)
- have a look at my Wiki...
Forum: Prime Wiki 2021-07-27, 08:58
Replies: 44
Views: 2,777
Posted By kar_bon
It's not that easy to import such user rights...

It's not that easy to import such user rights from Wikipedia, because their got more deeper dependencies with modules and other templates.
Giving editing rights for such very highly used templates...
Forum: Riesel Prime Search 2021-07-25, 21:46
Replies: 439
Views: 86,008
Posted By kar_bon
k=1759 was done to n=1M by NPLB Drive 10, but not...

k=1759 was done to n=1M by NPLB Drive 10, but not yet included in the Wiki ('https://www.rieselprime.de/ziki/NPLB_Drive_10'), see also my old page...
Forum: Prime Wiki 2021-07-14, 06:28
Replies: 193
Sticky: Prime-Wiki
Views: 67,831
Posted By kar_bon
I've changed/updated the template for Proth...

I've changed/updated the template for Proth primes (k*b^n+1) including the base as parameter and in the page name. So there's no need to use a "Gen Proth prime" template (see also the "Template...
Forum: Aliquot Sequences 2021-07-09, 16:18
Replies: 1,360
Views: 150,048
Posted By kar_bon
50^98 terminates in P35.

50^98 terminates in P35.
Forum: Prime Wiki 2021-07-07, 12:57
Replies: 193
Sticky: Prime-Wiki
Views: 67,831
Posted By kar_bon
I've managed to store and display "Long numbers",...

I've managed to store and display "Long numbers", using the FactorDB-IDs and shortcuts.

This was needed to collect and display all types of Generalizes Fermat numbers of the forms a^2^n+b^2^n.
...
Showing results 1 to 25 of 1000

 
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