165 · 2230803 + 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:165 · 2230803 + 1
Verification status (*):Proven
Official Comment (*):Divides GF(230801,12) [p50]
Proof-code(s): (*):g196 : Odermatt, Proth.exe
Decimal Digits:69481   (log10 is 69480.843573178)
Rank (*):55269 (digit rank is 1)
Entrance Rank (*):329
Currently on list? (*):no
Submitted:11/1/2002 05:59:59 UTC
Last modified:3/11/2023 15:54:10 UTC
Database id:347
Status Flags:none
Score (*):38.4319 (normalized score 0.0014)

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.
Generalized Fermat Divisors (bases 3,5,6,10,12) (archivable *)
Prime on list: no, rank 44, weight 43.537937420984
Subcategory: "Divides GF(*,12)"
(archival tag id 188666, tag last modified 2024-04-07 12:37:28)

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_id347
person_id9
machineWinXP P4 1.8GHz
whatprime
notesPFGW Version 20021217.Win_Dev (Beta 'caveat utilitor') [FFT v22.7 w/P4] Running N-1 test using base 17 Primality testing 165*2^230803+1 [N-1, Brillhart-Lehmer-Selfridge] Calling Brillhart-Lehmer-Selfridge with factored part 100.00% 165*2^230803+1 is prime! (390.803000 seconds)
modified2003-03-25 17:21:48
created2003-01-22 03:11:49
id67219

Query times: 0.0003 seconds to select prime, 0.0004 seconds to seek comments.
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