81505264551807 · 233444 + 1
(Another of the Prime Pages' resources)
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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:81505264551807 · 233444 + 1
Verification status (*):Proven
Official Comment:Triplet (2)
Proof-code(s): (*):p296 : Kaiser1, Srsieve, LLR, OpenPFGW
Decimal Digits:10082   (log10 is 10081.558360648)
Rank (*):73302 (digit rank is 2)
Entrance Rank (*):60344
Currently on list? (*):short
Submitted:7/23/2012 10:27:09 CDT
Last modified:7/23/2012 10:50:29 CDT
Database id:108458
Status Flags:none
Score (*):32.4653 (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.
Triplet (archivable class *)
Prime on list: yes, rank 5
Subcategory: "Triplet (2)"
(archival tag id 214443, tag last modified 2017-11-27 10:20:20)

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.
machineDitto P4 P4
notesCommand: /home/ditto/client/TrialDiv/TrialDiv -q 81505264551807 2 33444 1 2>&1
[Elapsed time: 8.155 seconds]
modified2012-08-14 21:01:05
created2012-07-23 10:35:09

machineDitto P4 P4
notesCommand: /home/ditto/client/pfgw -t -q"81505264551807*2^33444+1" 2>&1
PFGW Version [GWNUM 26.5]
Primality testing 81505264551807*2^33444+1 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Calling Brillhart-Lehmer-Selfridge with factored part 99.86%
81505264551807*2^33444+1 is prime! (9.4775s+0.0003s)
[Elapsed time: 9.00 seconds]
modified2012-08-14 21:01:05
created2012-07-23 10:38:05

Query times: 0.0003 seconds to select prime, 0.0001 seconds to seek comments.