142631667285 · 21290000 - 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.

This prime's information:

Description:142631667285 · 21290000 - 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):L2354 : Sheridan, TwinGen, PrimeGrid, LLR
Decimal Digits:388340   (log10 is 388339.84862249)
Rank (*):14225 (digit rank is 41)
Entrance Rank (*):785
Currently on list? (*):no
Submitted:10/30/2012 07:19:58 CDT
Last modified:10/30/2012 08:20:23 CDT
Removed (*):10/18/2015 08:48:53 CDT
Database id:109955
Status Flags:none
Score (*):43.7286 (normalized score 0.4041)

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.
machineRedHat Virtual STEM Server
notesCommand: /home/caldwell/client/llr.pl 142631667285*2^1290000-1 2>&1 Starting Lucas Lehmer Riesel prime test of 142631667285*2^1290000-1 Using Zero Padded IBDWT : Mersenne fftlen = 65536, Used fftlen = 131072 V1 = 5 ; Computing U0... V1 = 5 ; Computing U0...done.Starting Lucas-Lehmer loop... 142631667285*2^1290000-1 is prime! Time : 2722.397 sec. [Elapsed time: 45.38 minutes]
modified2020-07-07 17:30:23
created2012-10-30 07:22:53

machineDitto P4 P4
notesCommand: /home/ditto/client/TrialDiv/TrialDiv -q 142631667285 2 1290000 -1 2>&1 [Elapsed time: 10.207 seconds]
modified2020-07-07 17:30:23
created2012-10-30 07:35:01

Query times: 0.0003 seconds to select prime, 0.0004 seconds to seek comments.
Printed from the PrimePages <primes.utm.edu> © Chris Caldwell.