3505351394937 · 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:3505351394937 · 21290000 - 1
Verification status (*):Proven
Official Comment:
Proof-code(s): (*):L3985 : Okazaki, TwinGen, PrimeGrid, LLR
Decimal Digits:388342   (log10 is 388341.239138096)
Rank (*):6371 (digit rank is 155)
Entrance Rank (*):4910
Currently on list? (*):no
Submitted:6/13/2017 22:35:33 CDT
Last modified:6/13/2017 23:50:09 CDT
Removed (*):6/29/2017 12:33:38 CDT
Database id:123515
Status Flags:TrialDiv
Score (*):43.7286 (normalized score 0.8318)

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 (pool) 4c+4c 3.5GHz
notesCommand: /home/caldwell/clientpool/1/pfgw64 -tp -q"3505351394937*2^1290000-1" 2>&1
PFGW Version [GWNUM 27.11]
Primality testing 3505351394937*2^1290000-1 [N+1, Brillhart-Lehmer-Selfridge]
Running N+1 test using discriminant 17, base 1+sqrt(17)
Calling Brillhart-Lehmer-Selfridge with factored part 100.00%

3505351394937*2^1290000-1 is prime! (2961.6379s+0.0004s)
[Elapsed time: 49.37 minutes]
modified2017-08-07 13:02:22
created2017-06-13 22:53:01

Query times: 0.0004 seconds to select prime, 0.0008 seconds to seek comments.