Our university will have a core network upgrade on Saturday, June 1, beginning at 6 AM CDT (11 AM UTC/GMC).
The outage should last less than four hours. Chris Caldwell (firstname.lastname@example.org)
At this site we maintain a list of the 5000 Largest Known Primes which is updated hourly. This list is the most important databases at The Prime Pages: a collection of research, records and results all about prime numbers. This page summarizes our information about one of these primes.
This prime's information:
|Description:||427194 · 113427194 + 1|
|Verification status (*):||Proven|
|Official Comment:||Generalized Cullen|
|Unofficial Comments:||This prime has 1 user comment below.|
|Proof-code(s): (*):||p310 : Hubbard, Gcwsieve, MultiSieve, PrimeGrid, OpenPFGW|
|Decimal Digits:||877069 (log10 is 877068.4232106)|
|Rank (*):||93 (digit rank is 1)|
|Entrance Rank (*):||57|
|Currently on list? (*):||short|
|Submitted:||1/29/2012 12:01:47 CDT|
|Last modified:||1/30/2012 02:50:24 CDT|
|Score (*):||46.2305 (normalized score 30.4276)|
There are certain forms classed as
archivable: these prime may (at times)
remain on this list even if they do not make
the Top 5000 proper. Such primes are tracked with archival
- Generalized Cullen (archivable *)
- Prime on list: yes, rank 1
Subcategory: "Generalized Cullen"
(archival tag id 213810, tag last modified 2012-01-30 02:50:25)
User comments about this prime (disclaimer):
User comments are allowed to convey mathematical information about this number, how it was proven prime.... See our guidelines and restrictions.
The Top 5000 Primes is a list for proven primes only. In order to maintain the
integrity of this list, we seek to verify the primality of all submissions.
We are currently unable to check all proofs (ECPP, KP, ...), but we will at least trial
divide and PRP
check every entry before it is included in the list.
|machine||Ditto P4 P4|
|notes||Command: /home/ditto/client/TrialDiv/TrialDiv -q 427194 113 427194 1 2>&1|
[Elapsed time: 9.271 seconds]
|machine||Ditto P4 P4|
|notes||Command: /home/ditto/client/pfgw -t -q"427194*113^427194+1" 2>&1|
PFGW Version 22.214.171.124BIT.20110215.x86_Dev [GWNUM 26.5]
Primality testing 427194*113^427194+1 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Calling Brillhart-Lehmer-Selfridge with factored part 100.00%
427194*113^427194+1 is prime! (51331.9834s+0.0705s)
[Elapsed time: 14.26 hours]
Query times: 0.0005 seconds to select prime, 0.0009 seconds to seek comments.