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:
|Description:||5 · 21320487 + 1|
|Verification status (*):||Proven|
|Official Comment:||Divides GF(1320486,12)|
|Proof-code(s): (*):||g55 : Toplic, Proth.exe|
|Decimal Digits:||397507 (log10 is 397506.894854348)|
|Rank (*):||6874 (digit rank is 1)|
|Entrance Rank (*):||7|
|Currently on list? (*):||short|
|Submitted:||3/20/2002 08:41:24 CDT|
|Last modified:||3/20/2002 08:41:24 CDT|
|Score (*):||43.8003 (normalized score 0.7529)|
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
- Generalized Fermat Divisors (bases 3,5,6,10,12) (archivable *)
- Prime on list: yes, rank 11, weight 45.4098026201333
Subcategory: "Divides GF(*,12)"
(archival tag id 187072, tag last modified 2016-03-15 13:57:15)
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.
|machine||WinXP Athlon 1.3GHz|
|notes||PFGW Version 1.1 for Windows|
Running N-1 test using base 3
Primality testing 5*2^1320487+1 [N-1, Brillhart-Lehmer-Selfridge]
Calling Brillhart-Lehmer-Selfridge with factored part 100.00%
5*2^1320487+1 is prime! (57944.290000 seconds)
Query times: 0.0004 seconds to select prime, 0.0006 seconds to seek comments.