(12475027751 - 1)/124749

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:(12475027751 - 1)/124749
Verification status (*):PRP
Official Comment (*):Generalized repunit
Unofficial Comments:This prime has 1 user comment below.
Proof-code(s): (*):p441 : Wu_T, CM, OpenPFGW
Decimal Digits:141416   (log10 is 141415.12538518)
Rank (*):43406 (digit rank is 1)
Entrance Rank (*):43273
Currently on list? (*):yes
Submitted:9/25/2024 20:49:39 UTC
Last modified:9/26/2024 03:37:10 UTC
Database id:138575
Status Flags:Verify
Score (*):40.6215 (normalized score 0.011)

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 Repunit (archivable *)
Prime on list: yes, rank 1
Subcategory: "Generalized Repunit"
(archival tag id 229658, tag last modified 2024-09-26 03:37:11)

User comments about this prime (disclaimer):

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Tom Wu writes (25 Sep 2024):  (report abuse)
KP proof, with N-1 factored to 32%, details at:
https://xenon.stanford.edu/~tjw/pp/124750_27751/index.html
The proof also includes ECPP certificates for two helper primes of 36661 digits and 7299 digits, both proven with CM-ECPP.

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_id138575
person_id9
machineUsing: Digital Ocean Droplet
whatprp
notesCommand: /var/www/clientpool/1/pfgw64 -V -f -tc -q"(124750^27751-1)/124749" >command_output 2>&1
PFGW Version 4.0.4.64BIT.20221214.x86_Dev [GWNUM 30.11]
Primality testing (124750^27751-1)/124749 [N-1/N+1, Brillhart-Lehmer-Selfridge]
trial


Running N-1 test using base 2
Generic modular reduction using generic reduction AVX-512 FFT length 48K, Pass1=128, Pass2=384, clm=1 on A 469771-bit number
Running N+1 test using discriminant 7, base 1+sqrt(7)
Generic modular reduction using generic reduction AVX-512 FFT length 48K, Pass1=128, Pass2=384, clm=1 on A 469771-bit number
Calling N-1 BLS with factored part 0.16% and helper 0.00% (0.49% proof)


(124750^27751-1)/124749 is Fermat and Lucas PRP! (974.6055s+0.0022s)
[Elapsed time: 16.27 minutes]
modified2024-09-26 03:28:59
created2024-09-26 03:12:43
id184419

Query times: 0.0003 seconds to select prime, 0.0004 seconds to seek comments.
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