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 2013-03-30, 07:11 #1486 Puzzle-Peter     Jun 2009 22·132 Posts 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
2013-03-30, 09:03   #1487
kar_bon

Mar 2006
Germany

2,857 Posts

Quote:
 Originally Posted by Puzzle-Peter 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.

2013-03-30, 16:20   #1488
Puzzle-Peter

Jun 2009

22·132 Posts

Quote:
 Originally Posted by kar_bon 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.

 2013-04-03, 07:05 #1489 Jayder     Dec 2012 2·139 Posts 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
 2013-04-04, 10:51 #1490 ChristianB   Apr 2013 Germany 4658 Posts 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.
 2013-04-05, 09:28 #1491 kar_bon     Mar 2006 Germany 1011001010012 Posts 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
 2013-04-05, 10:41 #1492 Jayder     Dec 2012 2×139 Posts 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?
 2013-04-05, 10:51 #1493 debrouxl     Sep 2009 977 Posts 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.
 2013-04-05, 12:58 #1494 BigBrother   Feb 2005 The Netherlands 2×109 Posts Isn't it possible to ban the IPs of these idiots?
 2013-04-05, 14:47 #1495 debrouxl     Sep 2009 977 Posts It is possible, but bans based on IP addresses are easy to work around...
2013-04-05, 17:14   #1496
cmd

"(^r'°:.:)^n;e'e"
Nov 2008
;t:.:;^

33×37 Posts

Quote:
 Originally Posted by kar_bon 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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