Our university will have a core network upgrade on Saturday, June 1, beginning at 6 AM CDT (11 AM UTC/GMC).
The outage should last less than four hours. Chris Caldwell (firstname.lastname@example.org)
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:||1361244131072 + 1|
|Verification status (*):||Proven|
|Official Comment:||Generalized Fermat|
|Proof-code(s): (*):||g236 : Heuer, GFNSearch, GFN17Sieve, Proth.exe|
|Decimal Digits:||803988 (log10 is 803987.256575782)|
|Rank (*):||113 (digit rank is 1)|
|Entrance Rank (*):||9|
|Currently on list? (*):||short|
|Submitted:||7/9/2004 04:17:05 CDT|
|Last modified:||7/9/2004 04:17:05 CDT|
|Score (*):||45.9635 (normalized score 23.2672)|
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 (archivable *)
- Prime on list: yes, rank 16
Subcategory: "Generalized Fermat"
(archival tag id 204696, tag last modified 2013-04-23 00:50:29)
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 P4 2.8GHz|
|notes||Command: /home/caldwell/client/pfgw -f -t -q"1361244^131072+1" 2>&1|
PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4]
Primality testing 1361244^131072+1 [N-1, Brillhart-Lehmer-Selfridge]
trial factoring to 313033767
Running N-1 test using base 5
Using SSE2 FFT
Adjusting authentication level by 1 for PRIMALITY PROOF
Reduced from FFT(393216,19) to FFT(393216,18)
Reduced from FFT(393216,18) to FFT(393216,17)
Reduced from FFT(393216,17) to FFT(393216,16)
5341584 bit request FFT size=(393216,16)
Calling Brillhart-Lehmer-Selfridge with factored part 82.41%
1361244^131072+1 is prime! (289063.3696s+0.3350s)
Query times: 0.0003 seconds to select prime, 0.0004 seconds to seek comments.