1967941782537 · 21290000 - 1
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At this site we maintain a list of the 5000 Largest Known Primes which is updated hourly. This list is the most important databases at The Prime Pages: 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:

field (help)value
Description:1967941782537 · 21290000 - 1
Verification status (*):Proven
Official Comment:
Proof-code(s): (*):L927 : Brown1, TwinGen, PrimeGrid, LLR
Decimal Digits:388341   (log10 is 388340.98841878)
Rank (*):7058 (digit rank is 41)
Entrance Rank (*):2835
Currently on list? (*):no
Submitted:4/18/2015 09:49:35 CDT
Last modified:4/21/2015 08:50:24 CDT
Removed (*):8/31/2016 06:10:18 CDT
Database id:119771
Status Flags:TrialDiv
Score (*):43.7286 (normalized score 0.9195)

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.
machineUsing: Xeon 4c+4c 3.5GHz
notesCommand: /home/caldwell/client/llr.pl 1967941782537*2^1290000-1 2>&1
Resuming LLR test of 1967941782537*2^1290000-1 at iteration 1050708 [81.45%]
1967941782537*2^1290000-1 is prime! (388341 decimal digits) Time : 772.047 sec.
[Elapsed time: 2.38 minutes]
modified2015-05-07 06:34:53
created2015-04-21 08:21:01

Query times: 0.0004 seconds to select prime, 0.0006 seconds to seek comments.