Factoring database

[10metreh]

Someone (CRGreathouse, was it you?) has finished the range 10^100+x,1,100, so I will soon start the 10^100-x,1,100 range. Nice new database layout!

Syd, what processors do your workers have? For some processors, yafu is faster at sieving.

[Syd]

Originally Posted by 10metreh

Nice new database layout!

Syd, what processors do your workers have? For some processors, yafu is faster at sieving.

Thank you But its still far away from being done. The "workers" are all running on my Q6700 + one on the server

[10metreh]

Originally Posted by Syd

Thank you But its still far away from being done. The "workers" are all running on my Q6700 + one on the server

I think yafu is faster for that processor.

[henryzz]

is there a page that tells us what the workers are doing

[Syd]

Next update, now it does *some* algebraic factorizations,

How much are you doing on near-Cunningham numbers (numbers of the form http://mersenneforum.org/cgi-bin/mim...?a%5Eb%20+%20c, http://mersenneforum.org/cgi-bin/mimetex.cgi?c small)?

Added them, a<1000, b<130, c<8, maybe more later.

P.S. It would be nice if we could add algebraic factors at least manually. Example 12^190+11^190
Report factor(s): ...and we enter... 12^38+11^38
(which is itself composite, but please evaluate it behind the scenes, look it up in the database and apply all found factors recursively, right? Just my 2 cents)

Now you can add them manually. However, i'm working on adding them automatically, which is much harder than i expected.
The factors are applied automatically

there are big tables of factors available for inhalation at http://home.att.net/~blair.kelly/mat.../fibonacci.txt and http://home.att.net/~blair.kelly/mat...acci/lucas.txt.

Inhaled

I did one at a time, but when I click on "Report" it just brings me back to the same page with no message about if the factor was successfully save or not. If I try to search again the new factors are not showing up.

So did this fail, or do you have some sort of process to verify the factors and they will appear at some later date?

The import failed, this was due to a bug in GCD/preprocessing of factors, under certain conditions it dropped some factors. I hope i fixed that one ..

is there a page that tells us what the workers are doing

No, not yet

Hope you all started well into the new year

Syd

[ET_]

I noticed a small glitch following the Fermat factors link
http://factorization.ath.cx/search.p...5Ex%29%2B1%2C1

Also, did you give a look at Kamada's webpages?

http://homepage2.nifty.com/m_kamada/...orizations.htm ?

Luigi

[J.F.]

Great work.

Tip/request: Will Edgington has lots of Mersenne factors. I'd really like to see them imported. If it is too much work for you, perhaps I might find some time soon to spam some factors to your server ;).

Q: is there a way for us users to promote PrP factors to Prime? For instance, M31 and M61 are currently marked PrP.

PS: I see that Will hasn't updated his data since 5 oct... hmmm.

[henryzz]

i would suggest using "pfgw -tc" for primality tests

[10metreh]

There is a bug in your multipage code which causes this to happen:

I searched for "2^293-x,1701,2000" for my 2-brilliant search.

A page came up with the results from 1701 to 1801. However, when I click on "Next page", I get the results from 3701 to 3801, not the expected results from 1802 to 1902 or something similar.

[Syd]

Originally Posted by ET_

I noticed a small glitch following the Fermat factors link
http://factorization.ath.cx/search.p...5Ex%29%2B1%2C1

Seems like the debug mode was still active

Also, did you give a look at Kamada's webpages?

http://homepage2.nifty.com/m_kamada/...orizations.htm ?

Yep, this is the place where everything started for me I'm currently importing these factors.

Tip/request: Will Edgington has lots of Mersenne factors. I'd really like to see them imported. If it is too much work for you, perhaps I might find some time soon to spam some factors to your server ;).

Inhaled them. However, if someone wants to spam some factors to the server, i have no problem with that.

Q: is there a way for us users to promote PrP factors to Prime? For instance, M31 and M61 are currently marked PrP.

Now you can. Well there is still a small bug in it, the status will not show up instantly, like when you submit the last factor.

[henryzz]

would it be possible to have the usage table above the list of factor tables
edit: i think that has now been done