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181 · 2308759 - 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:181 · 2308759 - 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):L138 : Soule, NewPGen, Rieselprime, LLR
Decimal Digits:92948   (log10 is 92947.9781098)
Rank (*):45823 (digit rank is 1)
Entrance Rank (*):2483
Currently on list? (*):no
Submitted:4/6/2006 05:07:09 CDT
Last modified:7/7/2006 07:57:36 CDT
Removed (*):5/29/2007 02:40:25 CDT
Database id:77502
Status Flags:none
Score (*):39.3289 (normalized score 0.0077)

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.
machineGenToo P3 400MHz
notesCommand: /home/caldwell/client/TrialDiv/TrialDiv -q 181 2 308759 -1 2>&1
[Elapsed time: 9.716 seconds]
modified2006-07-14 06:27:03
created2006-07-07 07:57:26

machineLinux P4 2.8GHz xserver
notesCommand: /home/caldwell/client/ 181*2^308759-1 2>&1
Starting Lucas Lehmer Riesel prime test of 181*2^308759-1
V1 = 4 ; Computing U0...
Done Computing U0.
Starting Lucas-Lehmer loop...
181*2^308759-1 is prime! Time : 362.309 sec.
[Elapsed time: 362 seconds]
modified2006-04-07 19:06:05
created2006-04-06 05:23:15

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