255 · 219002 + 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:255 · 219002 + 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):DM : Demichel
Decimal Digits:5723   (log10 is 5722.5785177874)
Rank (*):84089 (digit rank is 1)
Entrance Rank (*):507
Currently on list? (*):no
Submitted:10/1996
Last modified:10/1996
Removed (*):11/21/1998 01:30:33 CDT
Database id:23228
Status Flags:none
Score (*):30.7084 (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_id23228
person_id9
machineLinux PII 200
whatprime
notesPFGW Version 1.1 for Pentium and compatibles Running N-1 test using base 13 Primality testing 255*2^19002+1 [N-1, Brillhart-Lehmer-Selfridge] Calling Brillhart-Lehmer-Selfridge with factored part 99.96% 255*2^19002+1 is prime! (36.330000 seconds)
modified2003-03-25 11:26:06
created2002-12-08 10:02:43
id29590

Query times: 0.0002 seconds to select prime, 0.0004 seconds to seek comments.
Printed from the PrimePages <primes.utm.edu> © Chris Caldwell.