813 · 21179185 + 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.

Description:813 · 21179185 + 1
Verification status (*):Proven
Official Comment (*):[none]
Unofficial Comments:This prime has 1 user comment below.
Proof-code(s): (*):L2085 : Dodson1, PSieve, Srsieve, PrimeGrid, LLR
Decimal Digits:354973   (log10 is 354972.96552758)
Rank (*):12929 (digit rank is 1)
Entrance Rank (*):498
Currently on list? (*):no
Submitted:10/13/2011 08:59:42 CDT
Last modified:10/18/2011 18:48:31 CDT
Removed (*):9/23/2014 14:19:56 CDT
Database id:102432
Status Flags:none
Score (*):43.4525 (normalized score 0.474)

User comments about this prime (disclaimer):

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Bruce Dodson writes (11 Sep 2014):  (report abuse)
Divides GF(1179182,8)

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_id102432
person_id9
machineDitto P4 P4
whattrial_divided
notesCommand: /home/ditto/client/TrialDiv/TrialDiv -q 813 2 1179185 1 2>&1 [Elapsed time: 10.842 seconds]
modified2020-07-07 17:30:30
created2011-10-13 09:06:24
id134450

fieldvalue
prime_id102432
person_id9
machineRedHat P4 P4
whatprime
notesCommand: /home/caldwell/client/pfgw -t -q"813*2^1179185+1" 2>&1 PFGW Version 3.4.5.32BIT.20110215.x86_Dev [GWNUM 26.5] Primality testing 813*2^1179185+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 100.00% 813*2^1179185+1 is prime! (3209.2253s+0.0010s) [Elapsed time: 53.50 minutes]
modified2020-07-07 17:30:30
created2011-10-13 10:06:19
id134459

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