15567144131072 + 1
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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:15567144131072 + 1
Verification status (*):Proven
Official Comment:Generalized Fermat
Proof-code(s): (*):L4918 : Weiss1, GFNSvCUDA, GeneFer, AthGFNSieve, PrimeGrid, LLR
Decimal Digits:942698   (log10 is 942697.210546281)
Rank (*):583 (digit rank is 1)
Entrance Rank (*):544
Currently on list? (*):short
Submitted:7/1/2019 21:04:02 CDT
Last modified:7/2/2019 02:50:10 CDT
Database id:126600
Status Flags:TrialDiv
Score (*):46.4519 (normalized score 11.1596)

Archival tags:

There are certain forms classed as archivable: these prime may (at times) remain on this list even if they do not make the Top 5000 proper.  Such primes are tracked with archival tags.
Generalized Fermat (archivable *)
Prime on list: no, rank 144
Subcategory: "Generalized Fermat"
(archival tag id 220325, tag last modified 2019-09-18 19:50:23)

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_id126600
person_id9
machineUsing: Xeon (pool) 4c+4c 3.5GHz
whatprime
notesCommand: /home/caldwell/clientpool/1/pfgw64 -t -q"15567144^131072+1" 2>&1
PFGW Version 3.7.7.64BIT.20130722.x86_Dev [GWNUM 27.11]
Primality testing 15567144^131072+1 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Calling Brillhart-Lehmer-Selfridge with factored part 80.81%


15567144^131072+1 is prime! (19521.4808s+0.0270s)
[Elapsed time: 5.42 hours]
modified2019-07-02 02:38:23
created2019-07-01 21:13:01
id172286

Query times: 0.0002 seconds to select prime, 0.0002 seconds to seek comments.