109999 + 2421018651

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:109999 + 2421018651
Verification status (*):PRP
Official Comment (*):, ECPP(2) smallest gigantic twin
Unofficial Comments:This prime has 1 user comment below.
Proof-code(s): (*):c18 : Luhn, Primo
Decimal Digits:10000   (log10 is 9999)
Rank (*):82938 (digit rank is 24)
Entrance Rank (*):77581
Currently on list? (*):no
Submitted:6/5/2021 17:53:03 UTC
Last modified:5/20/2023 20:59:19 UTC
Database id:132377
Status Flags:Verify
Score (*):32.4398 (normalized score 0)

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.
Elliptic Curve Primality Proof (archivable *)
Prime on list: no, rank 325
Subcategory: "ECPP"
(archival tag id 226139, tag last modified 2024-03-24 06:37:14)

User comments about this prime (disclaimer):

User comments are allowed to convey mathematical information about this number, how it was proven prime.... See our guidelines and restrictions.

Norman Luhn writes (5 Jun 2021):  (report abuse)
http://factordb.com/index.php?query=10%5E9999%2B2421018651

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_id132377
person_id9
machineUsing: Xeon (pool) 4c+4c 3.5GHz
whatprp
notesCommand: /home/caldwell/clientpool/1/pfgw64 -tc -q"10^9999+2421018651" 2>&1 PFGW Version 4.0.1.64BIT.20191203.x86_Dev [GWNUM 29.8] Primality testing 10^9999+2421018651 [N-1/N+1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 2 Running N-1 test using base 3 Running N+1 test using discriminant 7, base 1+sqrt(7) Calling N-1 BLS with factored part 0.06% and helper 0.03% (0.22% proof) 10^9999+2421018651 is Fermat and Lucas PRP! (8.3419s+0.0001s) [Elapsed time: 8.00 seconds]
modified2022-07-11 18:21:46
created2021-06-05 17:56:08
id178089

Query times: 0.0002 seconds to select prime, 0.0004 seconds to seek comments.
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