9 · 1048051 - 1
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

At this site we maintain a list of the 5000 Largest Known Primes which is updated hourly. This list is the most important databases at The Prime Pages: 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:

field (help)value
Description:9 · 1048051 - 1
Verification status (*):Proven
Official Comment:Near-repdigit
Proof-code(s): (*):gd : Dubner, Proth.exe
Decimal Digits:48052   (log10 is 48051.9542425094)
Rank (*):55209 (digit rank is 1)
Entrance Rank (*):215
Currently on list? (*):no
Submitted:12/10/2000 11:47:39 CDT
Last modified:12/10/2000 11:47:39 CDT
Database id:1147
Status Flags:none
Score (*):37.2944 (normalized score 0.001)

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 127
Subcategory: "Near-repdigit"
(archival tag id 211089, tag last modified 2019-04-14 05:20:23)

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.
machineWindows XP P4 1.8GHz
notesPrimality testing 9*10^48051-1 [N+1, Brillhart-Lehmer-Selfridge] Calling Brillhart-Lehmer-Selfridge with factored part 69.90% 9*10^48051-1 is prime! (2601.789000 seconds) PFGW Version 20021217.Win_Dev (Beta 'caveat utilitor') [FFT v22.7 w/P4] Running N+1 test using discriminant 7, base 1+sqrt(7)
modified2003-03-25 11:24:29
created2002-12-22 04:00:21

Query times: 0.0004 seconds to select prime, 0.0006 seconds to seek comments.