
At this site we maintain a list of the 5000 Largest Known Primes which is updated hourly. This list is the most important databases at The Prime Pages: 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:
field (help)  value 
Description:  (2^{63703}  1)/42808417 
Verification status (*):  PRP 
Official Comment:  Mersenne cofactor, ECPP 
Unofficial Comments:  This prime has 1 user comment below. 
Proofcode(s): (*):  c59 : Metcalfe, OpenPFGW, Primo 
Decimal Digits:  19169 (log_{10} is 19168.882284614) 
Rank (*):  64252 (digit rank is 1) 
Entrance Rank (*):  58136 
Currently on list? (*):  short 
Submitted:  1/9/2014 13:21:24 CDT 
Last modified:  1/9/2014 13:51:04 CDT 
Database id:  116871 
Status Flags:  Verify, TrialDiv 
Score (*):  34.455 (normalized score 0) 

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: no, rank 21
Subcategory: "ECPP"
(archival tag id 217568, tag last modified 20161123 08:20:40)  Mersenne cofactor (archivable *)
 Prime on list: yes, rank 1
Subcategory: "Mersenne cofactor"
(archival tag id 217569, tag last modified 20140109 13:51:08)
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.
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.
field  value 
prime_id  116871 
person_id  9 
machine  RedHat P4 P4 
what  prp 
notes  Command: /home/caldwell/client/pfgw tc q"(2^637031)/42808417" 2>&1 PFGW Version 3.4.5.32BIT.20110215.x86_Dev [GWNUM 26.5] Primality testing (2^637031)/42808417 [N1/N+1, BrillhartLehmerSelfridge] Running N1 test using base 3 Running N1 test using base 7 Running N1 test using base 13 Running N+1 test using discriminant 19, base 1+sqrt(19) Calling N1 BLS with factored part 0.12% and helper 0.01% (0.36% proof) (2^637031)/42808417 is Fermat and Lucas PRP! (233.6976s+0.0004s) [Elapsed time: 3.90 minutes]

modified  20140401 17:37:38 
created  20140109 13:23:01 
id  162380 

Query times: 0.0003 seconds to select prime, 0.0006 seconds to seek comments.
