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Old 2013-03-30, 07:11   #1486
Puzzle-Peter
 
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Is there any way to import sr(x)sieve output? Is this even desired? From my work at CRUS I have many lines that look like

Code:
10015783365641 | 404*23^882592-1
10022393651131 | 404*23^838048-1
10041085361579 | 404*23^885872-1
10087402684339 | 404*23^920216-1
10219806779753 | 404*23^732424-1
10231177241561 | 404*23^929264-1
meaning 10015783365641divides 404*23^882592-1 etc.
Copy-pasting in the "Report factors" box does not work

Last fiddled with by Puzzle-Peter on 2013-03-30 at 07:11
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Old 2013-03-30, 09:03   #1487
kar_bon
 
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Quote:
Originally Posted by Puzzle-Peter View Post
Is there any way to import sr(x)sieve output? Is this even desired?
FactorDB was designed to store factors and primes up to 100k digits and that's really high enough. Factors like those from sieving results would blast the database.
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Old 2013-03-30, 16:20   #1488
Puzzle-Peter
 
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Quote:
Originally Posted by kar_bon View Post
FactorDB was designed to store factors and primes up to 100k digits and that's really high enough. Factors like those from sieving results would blast the database.
I see. Thanks for the information.
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Old 2013-04-03, 07:05   #1489
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As I type this, dozens of multiples of the P35: 88999999999999999999999999999999999 are being dumped into the database. I have factored a good 120 or more where this is a factor, and there are no signs of it letting up. I have since stopped factoring.

Maybe I shouldn't worry about this, but thought I would mention it as it seemed peculiar. Tell me not to worry about it and I won't.

Last fiddled with by Jayder on 2013-04-03 at 07:20
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Old 2013-04-04, 10:51   #1490
ChristianB
 
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Hello fellow factorisers,

some time ago (approx. 2 weeks), when I started to get interested in factordb, I also saw this specific P35 in a lot of small composites. I think someone is trying to find a fancy sequence.

I'm tackling the small composites from 70 to 85 digits with yoyo's script from time to time. I also try to clear the small PRP's (300 to 999 digits) that accumulated every 2 or 3 days.
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Old 2013-04-05, 09:28   #1491
kar_bon
 
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Someone is flodding the FactorDB with 99 digit numbers which all contain the factor 17775554443332221112223334445557770123456789557977

like 17775554443332221112223334445557770123456789564501 * 17775554443332221112223334445557770123456789557977.

cmd-type typical, factor those numbers by yourself! It's annoying!

Last fiddled with by kar_bon on 2013-04-05 at 09:33
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Old 2013-04-05, 10:41   #1492
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I'm not very knowledgeable, but surely they HAVE to know that these are the factors, right? You don't just accidentally or coincidentally submit hundreds of numbers with the same factor. Do you?

Is somebody doing this maliciously?
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Old 2013-04-05, 10:51   #1493
debrouxl
 
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Yes, every now and then, some people are submitting entries of no interest to FactorDB, and this behaviour is probably more than severe incompetence - maliciousness, you named it.
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Old 2013-04-05, 12:58   #1494
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Isn't it possible to ban the IPs of these idiots?
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Old 2013-04-05, 14:47   #1495
debrouxl
 
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It is possible, but bans based on IP addresses are easy to work around...
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Old 2013-04-05, 17:14   #1496
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Quote:
Originally Posted by kar_bon View Post
Someone is flodding the FactorDB with 99 digit numbers which all contain the factor 17775554443332221112223334445557770123456789557977

like 17775554443332221112223334445557770123456789564501 * 17775554443332221112223334445557770123456789557977.

cmd-type typical, factor those numbers by yourself! It's annoying!

17775554443332221112223334445557770123456789557977

T\/\/;n 17775554443332221112223334445557770123456789557979
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