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.
|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 (*):||61388 (digit rank is 1)|
|Entrance Rank (*):||61367|
|Currently on list? (*):||short|
|Submitted:||6/23/2022 05:59:12 CDT|
|Last modified:||6/23/2022 06:37:19 CDT|
|Blob database id:||401|
|Status Flags:||Reparse, Verify, TrialDiv|
|Score (*):||36.6025 (normalized score 0.0003)|
title='from prime_blob table' id='blob'>Description: (from blob table id=401)
Ramanujan tau function at 47^4176 ECPP
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.
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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.
field value prime_id 134074 person_id 9 machine Using: Dual Intel Xeon Gold 5222 CPUs 3.8GHz what prp notes Command: /home/caldwell/clientpool/1/pfgw64 -tc p_134074.txt 2>&1
PFGW Version 220.127.116.11BIT.20191203.x86_Dev [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]
modified 2022-06-23 06:01:49 created 2022-06-23 06:01:01 id 179808