874208 · 541748416 - 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.

Description:874208 · 541748416 - 1
Verification status (*):Proven
Official Comment (*):Generalized Woodall
Unofficial Comments:This prime has 1 user comment below.
Proof-code(s): (*):L4976 : Propper, Batalov, Gcwsieve, LLR
Decimal Digits:3028951   (log10 is 3028950.90958941)
Rank (*):51 (digit rank is 1)
Entrance Rank (*):38
Currently on list? (*):short
Submitted:9/26/2019 21:56:03 CDT
Last modified:10/3/2019 09:50:11 CDT
Database id:129954
Status Flags:TrialDiv
Score (*):50.0306 (normalized score 331.6522)

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 Woodall (archivable *)
Prime on list: yes, rank 3
Subcategory: "Generalized Woodall"
(archival tag id 223536, tag last modified 2019-11-26 12:20:12)

User comments about this prime (disclaimer):

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Serge Batalov writes (26 Sep 2019):  (report abuse)
= 874208 · 2916874208 - 1

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_id129954
person_id9
machineUsing: Xeon 4c+4c 3.5GHz
whatprime
notesCommand: /home/caldwell/client/pfgw/pfgw64 -tp -q"874208*54^1748416-1" 2>&1 PFGW Version 3.7.7.64BIT.20130722.x86_Dev [GWNUM 27.11] Primality testing 874208*54^1748416-1 [N+1, Brillhart-Lehmer-Selfridge] Running N+1 test using discriminant 5, base 1+sqrt(5) Calling Brillhart-Lehmer-Selfridge with factored part 82.62% 874208*54^1748416-1 is prime! (560786.4920s+0.0355s) [Elapsed time: 6.49 days]
modified2020-07-07 17:30:11
created2019-09-26 22:01:01
id175639

Query times: 0.0008 seconds to select prime, 0.0003 seconds to seek comments.
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