103939 · 2514230 - 11347 · 2508209 - 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:103939 · 2514230 - 11347 · 2508209 - 1
Verification status (*):Proven
Official Comment (*):Arithmetic progression (3,d=103939*2^514229-11347*2^508209)
Unofficial Comments:This prime has 1 user comment below.
Proof-code(s): (*):p266 : Zhou, Ritschel, Broadhurst, LLR, OpenPFGW
Decimal Digits:154804   (log10 is 154803.67144882)
Rank (*):40493 (digit rank is 1)
Entrance Rank (*):4214
Currently on list? (*):no
Submitted:2/28/2010 19:03:00 UTC
Last modified:3/11/2023 15:54:10 UTC
Database id:92027
Status Flags:none
Score (*):40.9 (normalized score 0.0168)

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.
Arithmetic Progressions of Primes (archivable class *)
Prime on list: no, rank 30, weight 47.846207766427
Subcategory: "Arithmetic progression (3,d=*)"
(archival tag id 210618, tag last modified 2023-03-11 16:02:30)

User comments about this prime (disclaimer):

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David Broadhurst writes (11 Sep 2014):  (report abuse)
comment

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_id92027
person_id9
machineDitto P4 P4
whattrial_divided
notesCommand: /home/ditto/client/pfgw -o -f -q"103939*2^514230-11347*2^508209-1" 2>&1 PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] trial factoring to 54342741 103939*2^514230-11347*2^508209-1 has no small factor. [Elapsed time: 595.622 seconds]
modified2020-07-07 22:30:36
created2010-02-28 19:05:02
id113429

fieldvalue
prime_id92027
person_id9
machineDitto P4 P4
whatprime
notesCommand: /home/ditto/client/pfgw -tp -q"103939*2^514230-11347*2^508209-1" 2>&1 PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] Primality testing 103939*2^514230-11347*2^508209-1 [N+1, Brillhart-Lehmer-Selfridge] Running N+1 test using discriminant 3, base 1+sqrt(3) Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(65536,20) to FFT(65536,19) Reduced from FFT(65536,19) to FFT(65536,18) Reduced from FFT(65536,18) to FFT(65536,17) Reduced from FFT(65536,17) to FFT(65536,16) 1028510 bit request FFT size=(65536,16) Calling Brillhart-Lehmer-Selfridge with factored part 98.83% 103939*2^514230-11347*2^508209-1 is prime! (-245.6346s+0.0000s) [Elapsed time: 2.34 hours]
modified2020-07-07 22:30:36
created2010-02-28 19:08:02
id113430

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