
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:  263821581 · 2^{45001}  487069965 · 2^{25002}  1 
Verification status (*):  Proven 
Official Comment:  Arithmetic progression (4,d=87940527*2^45001487069965*2^25001) 
Unofficial Comments:  This prime has 1 user comment below. 
Proofcode(s): (*):  p199 : Broadhurst, NewPGen, OpenPFGW 
Decimal Digits:  13556 (log_{10} is 13555.072145193) 
Rank (*):  69553 (digit rank is 8) 
Entrance Rank (*):  42448 
Currently on list? (*):  short 
Submitted:  6/4/2010 22:50:12 CDT 
Last modified:  6/4/2010 23:20:25 CDT 
Database id:  93020 
Status Flags:  none 
Score (*):  33.3824 (normalized score 0) 

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.
 Arithmetic Progressions of Primes (archivable class *)
 Prime on list: yes, rank 4, weight 44.1018155950205
Subcategory: "Arithmetic progression (4,d=*)"
(archival tag id 210708, tag last modified 20160315 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.
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.
field  value 
prime_id  93020 
person_id  9 
machine  RedHat P4 P4 
what  trial_divided 
notes  Command: /home/caldwell/client/pfgw o f q"263821581*2^45001487069965*2^250021" 2>&1 PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] trial factoring to 3990694 263821581*2^45001487069965*2^250021 has no small factor. [Elapsed time: 4.598 seconds]

modified  20111227 16:48:39 
created  20100604 22:52:02 
id  115422 

field  value 
prime_id  93020 
person_id  9 
machine  Ditto P4 P4 
what  prime 
notes  Command: /home/ditto/client/pfgw tp q"263821581*2^45001487069965*2^250021" 2>&1 PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] Primality testing 263821581*2^45001487069965*2^250021 [N+1, BrillhartLehmerSelfridge] Running N+1 test using discriminant 13, base 1+sqrt(13) Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(6144,21) to FFT(6144,20) Reduced from FFT(6144,20) to FFT(6144,19) Reduced from FFT(6144,19) to FFT(6144,18) Reduced from FFT(6144,18) to FFT(6144,17) Reduced from FFT(6144,17) to FFT(6144,16) 90074 bit request FFT size=(6144,16) Calling BrillhartLehmerSelfridge with factored part 55.53% 263821581*2^45001487069965*2^250021 is prime! (72.0800s+0.0000s) [Elapsed time: 73.00 seconds]

modified  20101013 12:41:37 
created  20100604 23:03:24 
id  115429 

Query times: 0.0003 seconds to select prime, 0.0004 seconds to seek comments.
