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(2117239 + 1)/3
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:||(2117239 + 1)/3|
|Verification status (*):||PRP|
|Official Comment (*):||Wagstaff, ECPP, generalized Lucas number|
|Proof-code(s): (*):||E2 : Propper, CM|
|Decimal Digits:||35292 (log10 is 35291.978540395)|
|Rank (*):||63756 (digit rank is 1)|
|Entrance Rank (*):||62221|
|Currently on list? (*):||short|
|Submitted:||8/7/2022 18:02:38 UTC|
|Last modified:||3/11/2023 15:54:10 UTC|
|Status Flags:||Verify, TrialDiv|
|Score (*):||36.3416 (normalized score 0.0002)|
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 Lucas Number (archivable *)
- Prime on list: yes, rank 7
Subcategory: "Generalized Lucas Number"
(archival tag id 227270, tag last modified 2023-03-11 16:02:31)
- Elliptic Curve Primality Proof (archivable *)
- Prime on list: yes, rank 15
(archival tag id 227271, tag last modified 2023-03-11 16:02:30)
- Wagstaff (archivable *)
- Prime on list: yes, rank 2
(archival tag id 227272, tag last modified 2023-03-11 16:02:31)
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.
field value prime_id 134282 person_id 9 machine Using: Dual Intel Xeon Gold 5222 CPUs 3.8GHz what prp notes Command: /home/caldwell/clientpool/1/pfgw64 -tc -q"(2^117239+1)/3" 2>&1
PFGW Version 126.96.36.199BIT.20191203.x86_Dev [GWNUM 29.8]
Primality testing (2^117239+1)/3 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N-1 test using base 5
Running N+1 test using discriminant 13, base 1+sqrt(13)
Calling N-1 BLS with factored part 0.10% and helper 0.02% (0.33% proof)
(2^117239+1)/3 is Fermat and Lucas PRP! (7.5225s+0.0001s)
[Elapsed time: 8.00 seconds]
modified 2022-08-07 18:04:09 created 2022-08-07 18:04:01 id 180058
Query times: 0.0004 seconds to select prime, 0.0005 seconds to seek comments.
Printed from the PrimePages <t5k.org> © Reginald McLean.