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281 · 251470 - 1

At this site we maintain a list of the 5000 Largest Known Primes which is updated hourly. This list is the most important PrimePages database: a collection of research, records and results all about prime numbers. This page summarizes our information about one of these primes.

Description:281 · 251470 - 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):g106 : Kuechler, Proth.exe
Decimal Digits:15497   (log10 is 15496.462583145)
Rank (*):69812 (digit rank is 1)
Entrance Rank (*):4794
Currently on list? (*):no
Submitted:10/23/2000 07:25:01 CDT
Last modified:10/23/2000 07:25:01 CDT
Removed (*):11/3/2000 15:27:44 CDT
Database id:11815
Status Flags:none
Score (*):33.7968 (normalized score 0)

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.
fieldvalue
prime_id11815
person_id9
machineWindows XP P4 1.8GHz
whatprime
notesPrimality testing 281*2^51470-1 [N+1, Brillhart-Lehmer-Selfridge] Calling Brillhart-Lehmer-Selfridge with factored part 99.98% 281*2^51470-1 is prime! (83.671000 seconds) PFGW Version 1.1 for Windows Running N+1 test using discriminant 3, base 1+sqrt(3)
modified2003-03-25 11:25:15
created2002-12-10 18:18:49
id36998

Query times: 0.0004 seconds to select prime, 0.0007 seconds to seek comments.
Printed from the PrimePages <primes.utm.edu> © Chris Caldwell.