6521953289619 · 255555 - 1

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:

Description:6521953289619 · 255555 - 1
Verification status (*):Proven
Official Comment (*):Triplet (2)
Proof-code(s): (*):p296 : Kaiser1, Srsieve, LLR, OpenPFGW
Decimal Digits:16737   (log10 is 16736.535786797)
Rank (*):72314 (digit rank is 2)
Entrance Rank (*):56919
Currently on list? (*):short
Submitted:4/30/2013 10:45:19 CDT
Last modified:4/30/2013 11:20:26 CDT
Database id:114017
Status Flags:none
Score (*):34.0351 (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.
Triplet (archivable class *)
Prime on list: yes, rank 2
Subcategory: "Triplet (2)"
(archival tag id 217110, tag last modified 2019-04-23 14:20:12)

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.
machineRedHat P4 P4
notesCommand: /home/caldwell/client/TrialDiv/TrialDiv -q 6521953289619 2 55555 -1 2>&1 [Elapsed time: 8.501 seconds]
modified2020-07-07 17:30:19
created2013-04-30 10:48:10

machineRedHat P4 P4
notesCommand: /home/caldwell/client/llr.pl 6521953289619*2^55555-1 2>&1 Starting Lucas Lehmer Riesel prime test of 6521953289619*2^55555-1 Using Zero Padded IBDWT : Mersenne fftlen = 3072, Used fftlen = 6144 V1 = 5 ; Computing U0... V1 = 5 ; Computing U0...done. Starting Lucas-Lehmer loop... 6521953289619*2^55555-1 is prime! Time : 8.723 sec. [Elapsed time: 9.00 seconds]
modified2020-07-07 17:30:19
created2013-04-30 10:53:48

Query times: 0.0003 seconds to select prime, 0.0004 seconds to seek comments.
Printed from the PrimePages <primes.utm.edu> © Chris Caldwell.