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-   -   Factoring database (https://www.mersenneforum.org/showthread.php?t=11119)

Andi47 2012-02-15 20:23

Hmmm.... seems there seems to be that "double-check primality" and "double-check sequence" buttons would be needed for registered users?

bchaffin 2012-02-17 17:12

878560 is another broken Aliquot sequence -- it thinks 531754410288614879 is prime.

Also 363270.

schickel 2012-02-23 12:42

I turned up some more problem sequences when I pulled the latest status.

There seem to be these that have problems:[code]75402 i2501 has a composite marked as prime
174888 i142->i143 (found by bchaffin)
363270 i261->i262 (found by bchaffin)
459980 i422->i423
700128 i230->i231
722430 i214 has a composite marked as prime
864792 i250->i251[/code]Additionally, I don't find any problem with 878560 (noted by bhcaffin), at least with a quick check. I'll run a more thorough test on it to check.....

EdH 2012-02-23 14:07

[QUOTE=schickel;290546]...
Additionally, I don't find any problem with 878560 (noted by bhcaffin), at least with a quick check. I'll run a more thorough test on it to check.....[/QUOTE]
Aliqueit likes the db .elf file, here... Is something more than that needed?

schickel 2012-02-24 01:36

[QUOTE=EdH;290555]Aliqueit likes the db .elf file, here... Is something more than that needed?[/QUOTE]I don't know....I was just responding to an error report earlier by bchaffin. Maybe it fixed itself?

chris2be8 2012-02-24 17:18

[QUOTE=Syd;288039]First I´ll check if the db runs stable without overloading the server. When this is done the scan buttons will be activated again.[/QUOTE]

Could you use Dario Alpern's ecm applet from [url]http://www.alpertron.com.ar/ECM.HTM[/url] or something like that for the scan buttons. That would do the work on the requesters system.

Chris K

Stargate38 2012-03-08 19:28

Why am I getting a "you have reached the hourly limit of 3000 ID's created" message even though I am logged in? :huh: It shouldn't say that.

firejuggler 2012-03-08 19:55

another problem I noticed is
[URL]http://factordb.com/index.php?id=1100000000489773674[/URL] , a 638 digits prp, cert uploaded the 16 february( by me) and verified, but still considered as a prp

Stargate38 2012-03-08 21:17

I have that problem too. When I was trying to prove a 400+ digit prime, I uploaded the cert and it said it was successfully processed (it even said "P" beside it), but it didn't say "Proven by Certificate".

Greebley 2012-03-15 14:32

The aliquot sequence 979884 is also having an issue at index 331 to 332:

331 33 [URL="http://factorization.ath.cx/index.php?showid=1100000000050135487"](show)[/URL] [URL="http://factorization.ath.cx/index.php?id=1100000000050135487"][COLOR=#002099]180539934906725323309899308491200[/COLOR][/URL]<33> = [URL="http://factorization.ath.cx/index.php?id=2"][COLOR=#000000]2^6[/COLOR][/URL] · [URL="http://factorization.ath.cx/index.php?id=3"][COLOR=#000000]3^2[/COLOR][/URL] · [URL="http://factorization.ath.cx/index.php?id=5"][COLOR=#000000]5^2[/COLOR][/URL] · [URL="http://factorization.ath.cx/index.php?id=17"][COLOR=#000000]17[/COLOR][/URL] · [URL="http://factorization.ath.cx/index.php?id=1594674553"][COLOR=#000000]1594674553[/COLOR][/URL]<10> · [URL="http://factorization.ath.cx/index.php?id=462476643092266223"][COLOR=#000000]462476643092266223[/COLOR][/URL]<18>
The final 18 digit number is not prime:
[URL]http://factorization.ath.cx/index.php?id=462476643092266223[/URL]

Oddly, this link doesn't lead to a consistent value for me - Sometimes I get the number = itself and the other times I get the factorization into two primes. Its like there are two entries that it can choose from. In any case the aliquot sequence has the wrong one.

miiriim 2012-03-16 20:30

Home prime data out of date
 
Kind of rushed in library here, so probably there is a better thread than this one (apologies). Just want to bring to any regular editor's attention that there has been significant change in the situation regarding the home-prime sequence of 49 (not solved, just more iterates complete) since the page dealing with that was last edited here. If anybody with time on his/her hands for some simple editing would like to post the new status of the problem, that up-to-date info can be found (and easily checked) at [URL="http://www.worldofnumbers.com"]www.worldofnumbers.com[/URL] (It is called topic 1, but you will have to go down the main page to find it, because the site primarily concerns palindromes). Thanks. I will do myself some day if it remains.:smile:


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