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21195711 · 2143630 - 1
|Description:||21195711 · 2143630 - 1|
|Verification status (*):||Proven|
|Official Comment (*):||Sophie Germain (p)|
|Proof-code(s): (*):||L3494 : Batalov, NewPGen, LLR|
|Decimal Digits:||43245 (log10 is 43244.264525207)|
|Rank (*):||57885 (digit rank is 2)|
|Entrance Rank (*):||55456|
|Currently on list? (*):||short|
|Submitted:||6/14/2019 17:52:37 CDT|
|Last modified:||6/14/2019 18:20:26 CDT|
|Score (*):||36.969 (normalized score 0.0006)|
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.
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 126553 person_id 9 machine Using: Xeon (pool) 4c+4c 3.5GHz what prime notes Command: /home/caldwell/clientpool/1/pfgw64 -tp -q"21195711*2^143630-1" 2>&1 PFGW Version 22.214.171.124BIT.20130722.x86_Dev [GWNUM 27.11] Primality testing 21195711*2^143630-1 [N+1, Brillhart-Lehmer-Selfridge] Running N+1 test using discriminant 5, base 1+sqrt(5) Calling Brillhart-Lehmer-Selfridge with factored part 99.98% 21195711*2^143630-1 is prime! (34.8982s+0.0003s) [Elapsed time: 35.00 seconds] modified 2020-07-07 17:30:13 created 2019-06-14 17:53:01 id 172238
Query times: 0.0006 seconds to select prime, 0.0008 seconds to seek comments.
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