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:

Verification status (*):PRP
Official Comment (*):ECPP
Unofficial Comments:This prime has 1 user comment below.
Proof-code(s): (*):E3 : Enge, CM
Decimal Digits:38404   (log10 is 38403.447314427)
Rank (*):63904 (digit rank is 1)
Entrance Rank (*):61367
Currently on list? (*):short
Submitted:6/23/2022 10:59:12 UTC
Last modified:5/20/2023 20:59:19 UTC
Database id:134074
Blob database id:401
Status Flags:Verify
Score (*):36.6025 (normalized score 0.0002)

Description: (from blob table id=401)

Ramanujan tau function at 47^4176 ECPP

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.
Elliptic Curve Primality Proof (archivable *)
Prime on list: yes, rank 16
Subcategory: "ECPP"
(archival tag id 227140, tag last modified 2023-11-09 22:37:15)

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.

Andreas Enge writes (28 Jun 2022):  (report abuse)
Value of the Ramanujan τ function. Certificate available on the CM website, checked by factordb.

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.
machineUsing: Dual Intel Xeon Gold 5222 CPUs 3.8GHz
notesCommand: /home/caldwell/clientpool/1/pfgw64 -tc p_134074.txt 2>&1 PFGW Version [GWNUM 29.8] Primality testing 2801008504...1586564481 [N-1/N+1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 13 Running N+1 test using discriminant 29, base 4+sqrt(29) Calling N-1 BLS with factored part 0.07% and helper 0.00% (0.22% proof) 2801008504...1586564481 is Fermat and Lucas PRP! (48.5888s+0.0042s) [Elapsed time: 48.00 seconds]
modified2022-07-11 18:21:44
created2022-06-23 11:01:01

Query times: 0.0003 seconds to select prime, 0.0005 seconds to seek comments.
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