Forum: Open Projects
2009-04-30, 21:04
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Replies: 18
Views: 7,500
Thanks a lot!
Looks like the range I was...
Thanks a lot!
Looks like the range I was working on is already done, except the under 39000 ranges marked "in progress".
I wonder why I didn't find this page. Probably overlooked it, or it wasn't...
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Forum: Open Projects
2009-04-30, 20:51
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Replies: 18
Views: 7,500
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Forum: Open Projects
2009-04-30, 20:36
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Replies: 18
Views: 7,500
Factorial primes search?
In case someone is still keeping track of a factorial prime search, all numbers are tested up to 39200.
I looked up various pages (aparently inactive, got them mostly on archive.org) and picked up...
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Forum: Lounge
2009-04-02, 21:11
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Replies: 110
Views: 10,150
I solve the 3x3x3 Rubik's cube like this:
- on...
I solve the 3x3x3 Rubik's cube like this:
- on one face make a "cross" aligned with the centerpieces of the adiacent faces; let's call this face "down"
- put in the lower corners
- put the upper...
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Forum: Math
2008-02-29, 12:47
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Replies: 54
Views: 4,455
Wrong, mathematics is an exact science (as...
Wrong, mathematics is an exact science (as opposed to physics for instance).
In physics, chemistry etc. we try to come up with a theory that covers most of the observable phenomena... theory which...
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Forum: Lounge
2006-03-22, 09:33
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Replies: 20
Views: 1,500
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Forum: Lounge
2006-03-16, 19:28
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Replies: 32
Views: 2,113
FWIW, in case somebody starts on this, I already...
FWIW, in case somebody starts on this, I already tested the following "ranges" (there were no solutions)
N in (6,14, ... 426)
b < 32, b prime, y < 4*10^7, any x, any a
and
b < 4000, b prime,...
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Forum: Math
2006-02-27, 21:23
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Replies: 16
Views: 1,290
Yes I know. I was just satisfying my own...
Yes I know. I was just satisfying my own curiosity and made this quick check to see if the distribution of (2^p-1)*(2^(p-1))+1 primes is not higher than expected. What makes you expect infinitely...
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Forum: Math
2006-02-25, 20:00
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Replies: 16
Views: 1,290
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Forum: Hardware
2006-02-10, 18:42
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Replies: 17
Views: 2,978
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Forum: News
2005-12-24, 09:33
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Replies: 265
Views: 27,505
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Forum: Factoring
2005-12-22, 09:18
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Replies: 83
Views: 7,674
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Forum: Factoring
2005-12-22, 08:11
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Replies: 83
Views: 7,674
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Forum: Factoring
2005-12-21, 19:17
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Replies: 83
Views: 7,674
I did 400 curves on F14 last year (on 4 P4 and...
I did 400 curves on F14 last year (on 4 P4 and Xeon computers at work, 100 curves each) with B1=44000000 and I never thought about reporting them ... a lot of work down the drain since I didn't save...
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Forum: News
2005-12-19, 17:50
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Replies: 265
Views: 27,505
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Forum: News
2005-12-18, 14:10
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Replies: 265
Views: 27,505
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Forum: News
2005-12-17, 22:16
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Replies: 265
Views: 27,505
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Forum: News
2005-12-16, 22:23
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Replies: 265
Views: 27,505
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Forum: Puzzles
2005-10-22, 12:33
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Replies: 32
Views: 1,341
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Forum: Hardware
2005-10-18, 21:49
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Replies: 7
Views: 2,517
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Forum: Lounge
2005-10-08, 07:33
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Replies: 68
Views: 2,068
Hmm, that's interesting. I wonder what diesel...
Hmm, that's interesting. I wonder what diesel engines thay based the study on. A "old school" non-catalysed diesel releases much more nitrogen oxides than a gasoline engine, but a lot less CO and CO2...
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Forum: Lounge
2005-10-07, 19:40
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Replies: 68
Views: 2,068
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Forum: Math
2005-09-23, 11:51
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Replies: 35
Views: 3,352
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Forum: Miscellaneous Math
2005-09-05, 16:33
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Replies: 18
Views: 1,574
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Forum: Hardware
2005-08-15, 07:33
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Replies: 1
Views: 503
Wasted work
Just wasted a couple of days worth. I'll share this experience, might prevent someone from reapeating my mistake.
A few days ago I added a 256Mb bar to my computer (a Kingston PC2100 2.5). This RAM...
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