U(10853, 1, 3960) + U(10853, 1, 3959)
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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:U(10853, 1, 3960) + U(10853, 1, 3959)
Verification status (*):PRP
Official Comment:Lehmer number, cyclotomy
Proof-code(s): (*):x25 : Water, Broadhurst, Primo, OpenPFGW
Decimal Digits:15977   (log10 is 15976.7416955375)
Rank (*):66458 (digit rank is 1)
Entrance Rank (*):12313
Currently on list? (*):short
Submitted:12/6/2002 02:34:58 CDT
Last modified:12/6/2002 02:34:58 CDT
Database id:60896
Status Flags:Verify
Score (*):33.8913 (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.
Lehmer number (archivable *)
Prime on list: yes, rank 18
Subcategory: "Lehmer number"
(archival tag id 192457, tag last modified 2017-06-28 15:50:31)
Cyclotomy Proof (tolerated *)
Prime on list: no, rank 8
Subcategory: "Cyclotomy Proof"
(archival tag id 192456, tag last modified 2009-02-12 20:01:27)

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_id60896
person_id9
machineLinux PII 200
whatprp
notesPFGW Version 20020311.x86_Dev (Alpha software, 'caveat utilitor') Primality Running N-1 test using base 29 4488160468...9451429599 [N-1/N+1, Brillhart-Lehmer-Selfridge] Running N+1 test using discriminant 47, base 1+sqrt(47) Calling N+1 BLS with factored part 1.33% and helper 0.40% (4.39% proof) U(10853,1,3960)+U(10853,1,3959) is Fermat and Lucas PRP! (-261.707296 seconds)
modified2003-03-25 11:21:50
created2003-01-20 18:30:56
id66904

Query times: 0.0007 seconds to select prime, 0.0006 seconds to seek comments.