9999992 · 10130127 - 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:9999992 · 10130127 - 1
Verification status (*):Proven
Official Comment (*):Near-repdigit
Proof-code(s): (*):p200 : Soule, NewPGen, LLR, OpenPFGW
Decimal Digits:130134   (log10 is 130133.99999965)
Rank (*):44503 (digit rank is 1)
Entrance Rank (*):1771
Currently on list? (*):no
Submitted:3/11/2008 17:12:36 UTC
Last modified:3/11/2023 15:54:10 UTC
Database id:84386
Status Flags:none
Score (*):40.3655 (normalized score 0.0096)

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.
Near-repdigit (archivable *)
Prime on list: no, rank 101
Subcategory: "Near-repdigit"
(archival tag id 211051, tag last modified 2024-02-07 04:37:20)

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 9999992 10 130127 -1 2>&1 [Elapsed time: 8.998 seconds]
modified2020-07-07 22:30:40
created2008-03-11 17:22:02

machineRedHat P4 P4
notesCommand: /home/caldwell/client/pfgw -tp -q"9999992*10^130127-1" 2>&1 PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] Primality testing 9999992*10^130127-1 [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(57344,20) to FFT(57344,19) Reduced from FFT(57344,19) to FFT(57344,18) Reduced from FFT(57344,18) to FFT(57344,17) Reduced from FFT(57344,17) to FFT(57344,16) 864608 bit request FFT size=(57344,16) Calling Brillhart-Lehmer-Selfridge with factored part 69.89% 9999992*10^130127-1 is prime! (-1112.7046s+0.0200s) [Elapsed time: 2.27 hours]
modified2020-07-07 22:30:40
created2008-03-11 17:23:01

Query times: 0.0002 seconds to select prime, 0.0003 seconds to seek comments.
Printed from the PrimePages <t5k.org> © Reginald McLean.