8 · 2658132486528 · 2969# + 1
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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:

field (help)value
Description:8 · 2658132486528 · 2969# + 1
Verification status (*):Proven
Official Comment:Cunningham chain 2nd kind (8p-7)
Proof-code(s): (*):p382 : Oestlin, NewPGen, OpenPFGW
Decimal Digits:1280   (log10 is 1279.8852121698)
Rank (*):100833 (digit rank is 8)
Entrance Rank (*):100407
Currently on list? (*):no
Submitted:7/1/2017 09:51:48 CDT
Last modified:7/1/2017 10:20:20 CDT
Database id:123633
Status Flags:TrialDiv
Score (*):26.0436 (normalized score 0)

Archival tags:

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 tags.
Cunningham Chains (2nd kind) (archivable class *)
Prime on list: no, rank 13, weight 40.30972557781
Subcategory: "Cunningham chain 2nd kind (8p-7)"
(archival tag id 218775, tag last modified 2017-07-01 10:20:23)

Verification data:

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.
fieldvalue
prime_id123633
person_id9
machineUsing: Xeon (pool) 4c+4c 3.5GHz
whatprime
notesCommand: /home/caldwell/clientpool/1/pfgw64 -t -q"2658132486528*2969#*8+1" 2>&1
PFGW Version 3.7.7.64BIT.20130722.x86_Dev [GWNUM 27.11]
Primality testing 2658132486528*2969#*8+1 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2999
Calling Brillhart-Lehmer-Selfridge with factored part 33.40%


2658132486528*2969#*8+1 is prime! (0.3835s+0.0005s)
[Elapsed time: 1.00 seconds]
modified2017-08-07 13:02:22
created2017-07-01 09:53:03
id169285

Query times: 0.0006 seconds to select prime, 0.0007 seconds to seek comments.