|
FermatSearch site under attack
Today FermatSearch.org suffered an attack from IP 130.193.147.7
Fortunately, they only managed to delete a 60-record table with the running ranges, while the 20 years long history of reservaation and user stats are still safe. Unfortunately, I discovered that my actual ISP doesn't offer databare or site backups :davieddy::furious::rant::bangheadonwall: Still worse, I discovered that all the manual database backup I set up just to be sure were working, but not the one related to the running table. I will update the table as new completed ranges (as well as your communications) come. Ranges that were requested long ago, but never completed are now considered relesed. I apologize for the inconvenience, and ask for your help and patience to recover as soon as possible. To avoid flooding the forum, please send a confirmation email to l dot morelli at mclink dot it. Luigi |
1 Attachment(s)
I am sorry to hear about the attack.
As it happens that my browser on this laptop I am using has the webpage of current reservations open (updated two days ago). I attach the html-file here as a zip in case it would be of some use to you. (There might also be some other ways to retrieve the information..) |
I've searched the online whois database at [url]https://www.ripe.net/[/url] for 130.193.147.7 and found:
[code] inetnum: 130.193.128.0 - 130.193.255.255 netname: IQ-NEWROZ-20111026 descr: Newroz Telecom Ltd. org: ORG-NTL14-RIPE country: IQ admin-c: NT1520-RIPE tech-c: NT1520-RIPE status: ALLOCATED PA mnt-by: RIPE-NCC-HM-MNT mnt-lower: NEWROZ-MNTNER mnt-routes: NEWROZ-MNTNER mnt-routes: newroztelecom-mnt notify: ameer.aljobori@newroztelecom.com changed: hostmaster@ripe.net 20111026 changed: bit-bucket@ripe.net 20111026 changed: bit-bucket@ripe.net 20120912 changed: bit-bucket@ripe.net 20120912 source: RIPE UpdateDelete organisation: ORG-NTL14-RIPE org-name: Newroz Telecom Ltd. org-type: LIR address: Newroz Telecom Ltd. address: Technical Contact address: Karez Street, Block, 52, Area, 415 address: Ein Kawa address: Erbil address: IRAQ phone: +9647700454040 fax-no: +964662250451 mnt-ref: NEWROZ-MNTNER mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT tech-c: NT1520-RIPE abuse-c: AR15602-RIPE source: RIPE e-mail: noc@newroztelecom.com admin-c: AE3926-RIPE changed: bitbucket@ripe.net 20140107 UpdateDelete role: Newroz Technical Contact address: Einkawa - Erbil - Kurdistan Region of Iraq mnt-by: newroztelecom-mnt e-mail: noc@newroztelecom.com phone: +9647700454040 phone: +96466990 admin-c: NT1520-RIPE tech-c: NT1520-RIPE nic-hdl: NT1520-RIPE changed: ameer.aljobori@newroztelecom.com 20101231 source: RIPE UpdateDeleteMore Info from RIPEstat route: 130.193.128.0/17 descr: Newroz Telcom IP Range origin: AS21277 mnt-by: newroztelecom-routemnt changed: ameer.aljobori@newroztelecom.com 20111101 source: RIPE [/code] Which does not look a good place to get the local police to investigate. Chris |
[QUOTE=rajula;375659]I am sorry to hear about the attack.
As it happens that my browser on this laptop I am using has the webpage of current reservations open (updated two days ago). I attach the html-file here as a zip in case it would be of some use to you. (There might also be some other ways to retrieve the information..)[/QUOTE] Thank you Tapio, you saved the project! :smile: The site is up and running again, with some more security features (though I'm seriously thinking about changing my ISP... 2 holes in less than one year are way too many). Luigi |
[QUOTE=chris2be8;375661]I've searched the online whois database at [url]https://www.ripe.net/[/url] for 130.193.147.7 and found:
[code] inetnum: 130.193.128.0 - 130.193.255.255 netname: IQ-NEWROZ-20111026 descr: Newroz Telecom Ltd. org: ORG-NTL14-RIPE country: IQ admin-c: NT1520-RIPE tech-c: NT1520-RIPE status: ALLOCATED PA mnt-by: RIPE-NCC-HM-MNT mnt-lower: NEWROZ-MNTNER mnt-routes: NEWROZ-MNTNER mnt-routes: newroztelecom-mnt notify: ameer.aljobori@newroztelecom.com changed: hostmaster@ripe.net 20111026 changed: bit-bucket@ripe.net 20111026 changed: bit-bucket@ripe.net 20120912 changed: bit-bucket@ripe.net 20120912 source: RIPE UpdateDelete organisation: ORG-NTL14-RIPE org-name: Newroz Telecom Ltd. org-type: LIR address: Newroz Telecom Ltd. address: Technical Contact address: Karez Street, Block, 52, Area, 415 address: Ein Kawa address: Erbil address: IRAQ phone: +9647700454040 fax-no: +964662250451 mnt-ref: NEWROZ-MNTNER mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT tech-c: NT1520-RIPE abuse-c: AR15602-RIPE source: RIPE e-mail: noc@newroztelecom.com admin-c: AE3926-RIPE changed: bitbucket@ripe.net 20140107 UpdateDelete role: Newroz Technical Contact address: Einkawa - Erbil - Kurdistan Region of Iraq mnt-by: newroztelecom-mnt e-mail: noc@newroztelecom.com phone: +9647700454040 phone: +96466990 admin-c: NT1520-RIPE tech-c: NT1520-RIPE nic-hdl: NT1520-RIPE changed: ameer.aljobori@newroztelecom.com 20101231 source: RIPE UpdateDeleteMore Info from RIPEstat route: 130.193.128.0/17 descr: Newroz Telcom IP Range origin: AS21277 mnt-by: newroztelecom-routemnt changed: ameer.aljobori@newroztelecom.com 20111101 source: RIPE [/code] Which does not look a good place to get the local police to investigate. Chris[/QUOTE] Yeah, I noticed that while removing a line from another table... The damage could have been worse, the cracker was just a script kid, and I have been a lazy donkey. Luigi |
F195 has a factor
My weekend coding of the new limb for MMFF paid off.
[CODE]F195 has a factor: 48595346636925*2^197+1 = 9761213910603494986281795830720869047027739722070601061612088452553113601 [TF:242:243:mmff 0.28 mfaktc_barrett247_F192_223gs][/CODE] |
the largest Fermat Divisor currently known
Congratulations to PrimeGrid!
193*2^3329782+1 is a Factor of F[SUB]3329780[/SUB] This is the largest Fermat Divisor currently known - and it is longer than a million decimal digits, too. |
[QUOTE=Batalov;379088]Congratulations to PrimeGrid!
193*2^3329782+1 is a Factor of F[SUB]3329780[/SUB] This is the largest Fermat Divisor currently known - and it is longer than a million decimal digits, too.[/QUOTE] A link to the discovery to gather some more infos? :-) |
In the obvious places!
[url]http://primes.utm.edu/primes/status.php[/url] [url]http://primes.utm.edu/primes/page.php?id=118254[/url] and [url]http://www.primegrid.com/forum_thread.php?id=5824[/url] |
Is there a formula for determining what k values currently theoretically would require the least amount of testing to find a Fermat divisor? I know the probability that a proth prime is a Fermat divisor is 1/k, and proth weights are calculable to determine the relative densities for a given k, but how would one incorporate the difference in n ranges? Would something like this even be feasible with the different fft lengths?
|
See the second (weighted) section of the [URL="http://primes.utm.edu/top20/page.php?id=8"]UTM page[/URL].
Together with the [URL="http://www.fermatsearch.org/stat/n.php"]current limits page[/URL], this is everything one would need to determine which ranges are the most fruitful. That said, the expected amount of work in most fruitful ranges is still only at most 2 time less than average (from N=24 with huge k values -- to N=10,000,000 with k=3 or k=5). In any case it is very large. For example, here's a free advice. An underdeveloped range is around N~=2000, and another one around N~=8000. Check the math (it is easy, really) and try them (expect to invest for a few dozen CPU years). |
| All times are UTC. The time now is 10:33. |
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.