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291 · 2201494 - 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:291 · 2201494 - 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):L21 : Harvey, NewPGen, NPLB, LLR
Decimal Digits:60659   (log10 is 60658.2018393)
Rank (*):50209 (digit rank is 1)
Entrance Rank (*):2702
Currently on list? (*):no
Submitted:1/11/2005 13:02:00 CDT
Last modified:1/11/2005 13:02:00 CDT
Removed (*):10/29/2005 17:29:31 CDT
Database id:73104
Status Flags:none
Score (*):38.0132 (normalized score 0.002)

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_id73104
person_id9
machineLinux P4 2.8GHz
whatprime
notesCommand: /home/caldwell/client/llr.pl 291*2^201494-1 2>&1
Starting Lucas Lehmer Riesel prime test of 291*2^201494-1
V1 = 3 ; Computing U0...
Done Computing U0.
Starting Lucas-Lehmer loop...
291*2^201494-1 is prime! Time : 304.256 sec.
modified2005-01-11 16:28:17
created2005-01-11 13:23:01
id78116

Query times: 0.0004 seconds to select prime, 0.0006 seconds to seek comments.
Printed from the PrimePages <primes.utm.edu> © Chris Caldwell.