94550! - 1

At this site we maintain a list of the 5000 Largest Known Primes which is updated hourly.  This list is the most important PrimePages database: 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:94550! - 1
Verification status (*):Proven
Official Comment (*):Factorial
Unofficial Comments:This prime has 1 user comment below.
Proof-code(s): (*):p290 : Domanov1, Fpsieve, PrimeGrid, OpenPFGW
Decimal Digits:429390   (log10 is 429389.1416194)
Rank (*):12885 (digit rank is 1)
Entrance Rank (*):155
Currently on list? (*):short
Submitted:10/5/2010 17:48:34 UTC
Last modified:3/11/2023 15:54:10 UTC
Database id:95248
Status Flags:none
Score (*):44.0374 (normalized score 0.3693)

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.
Factorial primes (archivable *)
Prime on list: yes, rank 9
Subcategory: "Factorial"
(archival tag id 210854, tag last modified 2023-03-11 15:53:59)

User comments about this prime (disclaimer):

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Chris Caldwell writes (11 Sep 2014):  (report abuse)
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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.
machineRedHat P4 P4
notesCommand: /home/caldwell/client/TrialDiv/TrialDiv -q 1 94550 ! -1 2>&1 [Elapsed time: 37239.758 seconds]
modified2020-07-07 22:30:33
created2010-10-05 17:52:02

machineRedHat P4 P4
notesCommand: /home/caldwell/client/pfgw -tp -q"94550!-1" 2>&1 PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] Primality testing 94550!-1 [N+1, Brillhart-Lehmer-Selfridge] Running N+1 test using discriminant 94561, base 1+sqrt(94561) Running N+1 test using discriminant 94561, base 2+sqrt(94561) Calling Brillhart-Lehmer-Selfridge with factored part 33.53% 94550!-1 is prime! (309659.2942s+2.1227s) [Elapsed time: 3.58 days]
modified2020-07-07 22:30:33
created2010-10-05 17:53:02

Query times: 0.0002 seconds to select prime, 0.0003 seconds to seek comments.
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