Forum: Aliquot Sequences
2021-04-19, 08:15
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Replies: 43
Views: 899
As usual I'm using (g)awk for processing...
As usual I'm using (g)awk for processing text-files and here's my solution for handling the regina_file.
First I delete all brackets and spaces from the original regina_file by calling (here under...
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Forum: Riesel Prime Search
2021-04-08, 07:04
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Replies: 94
Views: 23,990
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Forum: And now for something completely different
2021-03-16, 11:58
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Replies: 267
Views: 43,365
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Forum: Aliquot Sequences
2021-03-07, 18:52
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Replies: 1,087
Views: 90,661
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Forum: Software
2021-03-04, 13:39
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Replies: 13
Views: 946
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Forum: Aliquot Sequences
2021-03-02, 14:16
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Replies: 1,087
Views: 90,661
To the new appearance of the page:
Almost all...
To the new appearance of the page:
Almost all points cleared but not (yet)
- scripts for button function codes simplify
- 'table' with links/buttons as css
Those changes can be done later but...
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Forum: And now for something completely different
2021-03-02, 08:52
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Replies: 245
Views: 40,358
Base 938
Another one down:
Base 938 tested to n=22k
Found primes so far:
-1: 21852
+1: 54, 56, 654, 749, 3916, 11463
No further reservation.
(938^21852-1)^2-2 has 129898 digits
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Forum: Aliquot Sequences
2021-03-01, 17:34
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Replies: 1,087
Views: 90,661
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Forum: Riesel Prime Search
2021-03-01, 10:11
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Replies: 409
Views: 66,868
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Forum: Conjectures 'R Us
2021-02-15, 21:16
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Replies: 919
Views: 101,352
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Forum: Conjectures 'R Us
2021-02-15, 13:17
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Replies: 919
Views: 101,352
The Wiki contains a page for the Riesel problem...
The Wiki contains a page for the Riesel problem ('https://www.rieselprime.de/ziki/Riesel_problem') and also for the Prime Grid project ('https://www.rieselprime.de/ziki/PrimeGrid_Riesel_Problem').
...
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Forum: Riesel Prime Search
2021-02-14, 17:06
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Replies: 1,027
Views: 133,008
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Forum: Riesel Prime Search
2021-02-14, 09:44
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Replies: 1,027
Views: 133,008
I've updated k=31, 207, 221, 255, 285 in the...
I've updated k=31, 207, 221, 255, 285 in the Wiki.
For k=255 included all data from that own thread (link given).
A lot of k-values <300 still reserved with last information years ago.
Perhaps a...
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Forum: Proth Prime Search
2021-02-12, 10:40
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Replies: 10
Views: 1,247
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Forum: Riesel Prime Search
2021-02-02, 08:23
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Replies: 458
Views: 54,548
To give more hints:
- the link Happy given is...
To give more hints:
- the link Happy given is the thread, so you have to go to the last post in it from 2021-01-19 (although the suspended sieves didn't changed since then in the first post)
- next...
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Forum: And now for something completely different
2021-02-01, 09:43
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Replies: 245
Views: 40,358
base 738
(738^15864-1)^2-2 is prime, 90998 digits
pfgw64 -tp -q"(738^15864-1)^2-2"
PFGW Version 4.0.0.64BIT.20190528.Win_Dev [GWNUM 29.8]
Primality testing (738^15864-1)^2-2 [N+1,...
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Forum: And now for something completely different
2021-01-14, 08:18
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Replies: 245
Views: 40,358
Found (968^79512-1)^2-2...
Found (968^79512-1)^2-2 ('https://primes.utm.edu/primes/page.php?id=131572'), 474826 digits
Base 968 tested until n=80k, releasing.
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Forum: Viliam Furik
2021-01-09, 04:16
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Replies: 5
Views: 453
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Forum: Prime Wiki
2021-01-01, 22:48
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Replies: 199
Views: 46,567
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Forum: Prime Wiki
2021-01-01, 01:51
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Replies: 199
Views: 46,567
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Forum: Prime Wiki
2020-12-31, 20:37
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Replies: 199
Views: 46,567
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Forum: sweety439
2020-12-29, 14:44
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Replies: 1,215
Views: 66,953
So you got your own definition of GCD?
In...
So you got your own definition of GCD?
In the first post reads (for Riesel side): (k*b^n-1)/gcd(k-1, b-1)
b=2021, k=1, n=67 (from table above)
GCD for k=1 in the above formula is undefined...
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Forum: Riesel Prime Search
2020-12-16, 12:21
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Replies: 94
Views: 23,990
I've included k=13236795...
I've included k=13236795 ('https://www.rieselprime.de/ziki/Riesel_prime_13236795') into the Wiki with the history data from this thread and reserved for you.
Not listed the sieve depth, but could do...
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Forum: Conjectures 'R Us
2020-12-14, 08:22
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Replies: 112
Views: 32,689
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Forum: Riesel Prime Search
2020-12-12, 10:01
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Replies: 409
Views: 66,868
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