V(89849)
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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:V(89849)
Verification status (*):PRP
Official Comment:Lucas number, ECPP
Unofficial Comments:This prime has 1 user comment below.
Proof-code(s): (*):c70 : Dubner, Underwood, Primo
Decimal Digits:18778   (log10 is 18777.33048882)
Rank (*):64923 (digit rank is 1)
Entrance Rank (*):58261
Currently on list? (*):short
Submitted:1/9/2014 06:19:42 CDT
Last modified:1/9/2014 09:20:58 CDT
Database id:116861
Status Flags:Verify, TrialDiv
Score (*):34.3911 (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.
Lucas Number (archivable *)
Prime on list: yes, rank 4
Subcategory: "Lucas Number"
(archival tag id 217567, tag last modified 2015-09-23 10:50:29)
Elliptic Curve Primality Proof (archivable *)
Prime on list: no, rank 24
Subcategory: "ECPP"
(archival tag id 217566, tag last modified 2017-11-16 23:50:19)

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.

David Broadhurst writes (11 Sep 2014): 
certificate

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_id116861
person_id9
machineRedHat P4 P4
whatprp
notesCommand: /home/caldwell/client/pfgw -tc -q"V(89849)" 2>&1
PFGW Version 3.4.5.32BIT.20110215.x86_Dev [GWNUM 26.5]
Primality testing V(89849) [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N+1 test using discriminant 17, base 1+sqrt(17)
Calling N+1 BLS with factored part 0.35% and helper 0.24% (1.29% proof)
V(89849) is Fermat and Lucas PRP! (157.2144s+0.0095s)
[Elapsed time: 2.62 minutes]
modified2014-04-01 17:37:38
created2014-01-09 06:23:01
id162370

Query times: 0.0001 seconds to select prime, 0.0002 seconds to seek comments.