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:||240819405 · 213879 + 1|
|Verification status (*):||Proven|
|Official Comment:||Cunningham chain 2nd kind (2p-1)|
|Proof-code(s): (*):||g135 : Frind, Proth.exe|
|Decimal Digits:||4187 (log10 is 4186.37700129943)|
|Rank (*):||85833 (digit rank is 1)|
|Entrance Rank (*):||15258|
|Currently on list? (*):||no|
|Submitted:||1/11/2000 03:28:17 CDT|
|Last modified:||1/11/2000 03:28:17 CDT|
|Score (*):||29.7372 (normalized score 0)|
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
- Cunningham Chains (2nd kind) (archivable class *)
- Prime on list: no, rank 62, weight 29.4593284336599
Subcategory: "Cunningham chain 2nd kind (2p-1)"
(archival tag id 212523, tag last modified 2019-07-13 14:50:04)
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||Linux PII 200|
|notes||PFGW Version 1.1 for Pentium and compatibles Running N-1 test using base 7 Primality testing 240819405*2^13879+1 [N-1, Brillhart-Lehmer-Selfridge] Calling Brillhart-Lehmer-Selfridge with factored part 99.81% 240819405*2^13879+1 is prime! (18.160000 seconds) |
Query times: 0.0004 seconds to select prime, 0.0006 seconds to seek comments.