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:||193 · 23329782 + 1|
|Verification status (*):||Proven|
|Official Comment:||Divides Fermat F(3329780)|
|Unofficial Comments:||This prime has 1 user comment below.|
|Proof-code(s): (*):||L3460 : Ottusch, PSieve, Srsieve, PrimeGrid, LLR|
|Decimal Digits:||1002367 (log10 is 1002366.54657931)|
|Rank (*):||412 (digit rank is 1)|
|Entrance Rank (*):||98|
|Currently on list? (*):||short|
|Submitted:||7/25/2014 17:58:37 CDT|
|Last modified:||7/25/2014 20:20:04 CDT|
|Score (*):||46.6402 (normalized score 15.134)|
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
- Fermat Divisors (archivable *)
- Prime on list: yes, rank 1, weight 51.9029809315416
Subcategory: "Divides Fermat"
(archival tag id 217768, tag last modified 2016-03-15 13:57:14)
User comments about this prime (disclaimer):
User comments are allowed to convey mathematical information about this number, how it was proven prime.... See our guidelines and restrictions.
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||Xeon 4c+4c 3.5GHz|
|notes||Command: /home/caldwell/client/pfgw/pfgw64 -t -q"193*2^3329782+1" 2>&1|
PFGW Version 220.127.116.11BIT.20130722.x86_Dev [GWNUM 27.11]
Primality testing 193*2^3329782+1 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Calling Brillhart-Lehmer-Selfridge with factored part 100.00%
193*2^3329782+1 is prime! (4842.2594s+0.0013s)
[Elapsed time: 80.70 minutes]
Query times: 0.0005 seconds to select prime, 0.0009 seconds to seek comments.