
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:  27 · 2^{672007} + 1 
Verification status (*):  Proven 
Official Comment:  Divides Fermat F(672005) 
Unofficial Comments:  This prime has 1 user comment below. 
Proofcode(s): (*):  g279 : Cooper, NewPGen, PRP, Proth.exe 
Decimal Digits:  202296 (log_{10} is 202295.695659929) 
Rank (*):  22076 (digit rank is 1) 
Entrance Rank (*):  192 
Currently on list? (*):  short 
Submitted:  8/29/2005 21:54:48 CDT 
Last modified:  8/30/2005 07:33:25 CDT 
Database id:  75472 
Status Flags:  none 
Score (*):  41.7234 (normalized score 0.1244) 

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.
 Fermat Divisors (archivable *)
 Prime on list: yes, rank 15, weight 45.0192959029823
Subcategory: "Divides Fermat"
(archival tag id 187210, tag last modified 20160315 13:57:14)
User comments about this prime (disclaimer):
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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  75472 
person_id  9 
machine  Linux P4 2.8GHz 
what  prime 
notes  Command: /home/caldwell/client/pfgw f t q"27*2^672007+1" 2>&1 PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] Primality testing 27*2^672007+1 [N1, BrillhartLehmerSelfridge] trial factoring to 72273173 Running N1 test using base 5 Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(98304,20) to FFT(98304,19) Reduced from FFT(98304,19) to FFT(98304,18) Reduced from FFT(98304,18) to FFT(98304,17) Reduced from FFT(98304,17) to FFT(98304,16) 1344032 bit request FFT size=(98304,16) Calling BrillhartLehmerSelfridge with factored part 100.00% 27*2^672007+1 is prime! (9915.2392s+0.0506s) [Elapsed time: 9916 seconds]

modified  20050923 12:19:27 
created  20050829 22:23:00 
id  80639 

Query times: 0.0004 seconds to select prime, 0.0007 seconds to seek comments.
