Forum: Prime Gap Searches
2020-09-30, 04:38
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Replies: 214
Views: 34,984
:lol:All my computers have been packed away...
:lol:All my computers have been packed away turned off for the last 1.5 years. Maybe when Covid-19 settles down and I return to the USA I'll get them going again. I feel bad for not keeping up with...
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Forum: Prime Gap Searches
2020-09-11, 02:15
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Replies: 124
Views: 17,378
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Forum: Miscellaneous Math
2020-09-01, 11:59
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Replies: 10
Views: 1,984
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Forum: Computer Science & Computational Number Theory
2020-08-30, 11:31
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Replies: 34
Views: 15,555
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Forum: Factoring
2020-06-10, 04:30
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Replies: 13
Views: 3,976
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Forum: Computer Science & Computational Number Theory
2020-05-24, 12:35
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Replies: 34
Views: 15,555
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Forum: Prime Gap Searches
2019-05-03, 11:28
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Replies: 21
Views: 2,161
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Forum: Prime Gap Searches
2019-05-01, 16:31
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Replies: 21
Views: 2,161
$ perl -Mntheory=:all -E...
$ perl -Mntheory=:all -E 'prime_set_config(verbose=>2); say for sieve_prime_cluster(0,1e14,2,6,8,18,20,30,32,36,38,48,50,60,62,78,80);'
cluster sieve found 1 residues mod 30
cluster sieve found 1...
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Forum: Prime Gap Searches
2019-05-01, 16:28
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Replies: 21
Views: 2,161
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Forum: Programming
2019-04-24, 13:07
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Replies: 7
Views: 7,255
It is about time. I know WraithX submitted his...
It is about time. I know WraithX submitted his code to them years ago. IIRC it is a slower than mine, though in a nice neat library. I'd like to see either a standard Selfridge strong Lucas test,...
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Forum: Factoring
2019-04-03, 15:28
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Replies: 55
Views: 3,811
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Forum: Factoring
2019-04-02, 21:13
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Replies: 55
Views: 3,811
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Forum: Forum Feedback
2019-03-27, 17:35
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Replies: 17
Views: 2,649
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Forum: Miscellaneous Math
2019-03-21, 16:36
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Replies: 5
Views: 408
Good point. The sources don't even include a...
Good point. The sources don't even include a range for a in the theorems so they side-step it that way. Only when one has to actually go implement something to *find* a suitable value does this...
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Forum: Puzzles
2019-03-21, 16:33
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Replies: 216
Views: 40,374
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Forum: Miscellaneous Math
2019-03-21, 16:12
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Replies: 5
Views: 408
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Forum: Miscellaneous Math
2019-03-10, 03:39
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Replies: 5
Views: 550
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Forum: Twin Prime Search
2019-03-09, 14:40
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Replies: 8
Views: 4,970
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Forum: Prime Gap Searches
2019-03-09, 01:16
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Replies: 23
Views: 1,938
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Forum: Prime Gap Searches
2019-03-08, 22:13
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Replies: 23
Views: 1,938
Some simple transforms of Robert's code give a...
Some simple transforms of Robert's code give a ~2x speedup, or about 22e9/hour on a single-thread Macbook.
But then perhaps we notice that oneminus and oneplus are just the last and current prime...
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Forum: Lounge
2019-03-04, 04:58
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Replies: 108
Views: 9,160
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Forum: Software
2019-03-02, 05:39
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Replies: 19
Views: 1,919
Mathematica is a nice general purpose program. ...
Mathematica is a nice general purpose program. But it really isn't the fastest at a lot of things. Good GMP code or specific programs for operations can often be quite a bit faster. As others have...
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Forum: Prime Gap Searches
2019-02-27, 21:54
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Replies: 42
Views: 6,042
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Forum: Other Mathematical Topics
2019-02-19, 17:13
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Replies: 24
Views: 4,398
Dudley's paper "Formulas for Primes...
Dudley's paper "Formulas for Primes (https://www.maa.org/programs/faculty-and-departments/classroom-capsules-and-notes/formulas-for-primes)" (1983) contains some little formulas that produce either...
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Forum: Prime Gap Searches
2019-02-15, 20:55
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Replies: 23
Views: 5,217
Yes, quite a bit faster, albeit I don't know...
Yes, quite a bit faster, albeit I don't know anything as simple as modern primality testing. It still has a terrible growth rate so gets quite slow if you're spoiled by how fast we can do primality...
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