Forum: And now for something completely different
2021-01-14, 08:18
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Replies: 241
Views: 32,289
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: 4
Views: 80
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Forum: Prime Wiki
2021-01-01, 22:48
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Replies: 199
Views: 31,434
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Forum: Prime Wiki
2021-01-01, 01:51
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Replies: 199
Views: 31,434
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Forum: Prime Wiki
2020-12-31, 20:37
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Replies: 199
Views: 31,434
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Forum: sweety439
2020-12-29, 14:44
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Replies: 1,183
Views: 51,897
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: 88
Views: 19,789
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: 24,654
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Forum: Riesel Prime Search
2020-12-12, 10:01
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Replies: 399
Views: 52,959
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Forum: Conjectures 'R Us
2020-12-04, 11:42
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Replies: 112
Views: 24,654
I've changed/updated the page in the PrimeWiki...
I've changed/updated the page in the PrimeWiki for least Riesel values ('https://www.rieselprime.de/ziki/Riesel_prime_small_bases_least_n').
Now the wanted values are stored in a data file (no...
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Forum: Abstract Algebra & Algebraic Number Theory
2020-12-02, 15:04
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Replies: 8
Views: 1,082
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Forum: Riesel Prime Search
2020-12-01, 23:49
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Replies: 229
Views: 34,204
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Forum: Prime Wiki
2020-11-30, 20:44
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Replies: 38
Views: 1,614
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Forum: Riesel Prime Search
2020-11-27, 08:20
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Replies: 399
Views: 52,959
@diep
I've created the Riesel k=32767...
@diep
I've created the Riesel k=32767 ('https://www.rieselprime.de/ziki/Riesel_prime_32767') in the Wiki and reserved it for you (including tested to n=50k).
I've also updated the k=89 reservation....
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Forum: Conjectures 'R Us
2020-11-26, 15:50
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Replies: 298
Views: 42,513
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Forum: Riesel Prime Search
2020-11-17, 21:06
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Replies: 229
Views: 34,204
Seems a new prime for the Riesel Problem...
Seems a new prime for the Riesel Problem ('https://www.rieselprime.de/ziki/Riesel_problem') was found: 146561*2^11280802-1 ('https://primes.utm.edu/primes/page.php?id=131405') found by PrimeGrid's...
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Forum: And now for something completely different
2020-11-10, 22:03
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Replies: 40
Views: 12,920
My Wiki...
My Wiki ('https://www.rieselprime.de/ziki/Statistics') got the possibility to create pages for (Near/Generalized) Cullen/Woodall search with reserving any base by a user.
For now there're only a few...
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Forum: sweety439
2020-10-19, 20:40
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Replies: 3
Views: 457
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Forum: Conjectures 'R Us
2020-10-19, 10:45
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Replies: 10
Views: 3,448
I've included those 5 k-values in the Wiki...
I've included those 5 k-values in the Wiki ('https://www.rieselprime.de/ziki/Category:PrimeGrid_New_Sierpi%C5%84ski_Problem') with current status and a project page (need more history/text).
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Forum: Conjectures 'R Us
2020-10-19, 09:11
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Replies: 2,237
Views: 171,806
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Forum: Riesel Prime Search
2020-10-11, 08:58
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Replies: 66
Views: 12,688
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Forum: No Prime Left Behind
2020-09-25, 11:31
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Replies: 1,490
Views: 172,654
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Forum: Prime Wiki
2020-09-08, 10:15
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Replies: 199
Views: 31,434
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Forum: Riesel Prime Search
2020-09-08, 09:10
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Replies: 399
Views: 52,959
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Forum: Riesel Prime Search
2020-09-08, 06:41
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Replies: 399
Views: 52,959
1281979*2^n-1 has a Nash weight...
1281979*2^n-1 has a Nash weight ('https://www.rieselprime.de/ziki/Nash_weight') of 1789, so relatively low.
1281979 \equiv 1 mod 3 so all primes of that sequence are only odd n-values.
k-values...
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