65531 · 23629342 - 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:65531 · 23629342 - 1
Verification status (*):Proven
Official Comment (*):[none]
Unofficial Comments:This prime has 1 user comment below.
Proof-code(s): (*):L2269 : Schori, Srsieve, PrimeGrid, LLR
Decimal Digits:1092546   (log10 is 1092545.6229699)
Rank (*):1181 (digit rank is 1)
Entrance Rank (*):29
Currently on list? (*):yes
Submitted:4/12/2011 02:26:53 UTC
Last modified:3/11/2023 15:54:10 UTC
Database id:99479
Status Flags:none
Score (*):46.9045 (normalized score 5.7836)

User comments about this prime (disclaimer):

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PrimeGrid writes (11 Sep 2014):  (report abuse)
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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.
fieldvalue
prime_id99479
person_id9
machineRedHat P4 P4
whatprime
notesCommand: /home/caldwell/client/llr.pl 65531*2^3629342-1 2>&1 Starting Lucas Lehmer Riesel prime test of 65531*2^3629342-1 Using Irrational Base DWT : Mersenne fftlen = 196608, Used fftlen = 327680 V1 = 4 ; Computing U0... V1 = 4 ; Computing U0...done. Starting Lucas-Lehmer loop... 65531*2^3629342-1 is prime! Time : 37087.261 sec. [Elapsed time: 10.30 hours]
modified2020-07-07 22:30:31
created2011-04-12 02:28:07
id128477

fieldvalue
prime_id99479
person_id9
machineDitto P4 P4
whattrial_divided
notesCommand: /home/ditto/client/TrialDiv/TrialDiv -q 65531 2 3629342 -1 2>&1 [Elapsed time: 11.008 seconds]
modified2020-07-07 22:30:31
created2011-04-12 02:35:01
id128478

Query times: 0.0003 seconds to select prime, 0.0004 seconds to seek comments.
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