2 · 1031571488192 + 1
|Description:||2 · 1031571488192 + 1|
|Verification status (*):||Proven|
|Official Comment (*):||Cunningham chain 2nd kind (2p-1)|
|Proof-code(s): (*):||p409 : Nielsen1, OpenPFGW|
|Decimal Digits:||65647 (log10 is 65646.887513765)|
|Rank (*):||50931 (digit rank is 1)|
|Entrance Rank (*):||49140|
|Currently on list? (*):||short|
|Submitted:||5/3/2020 13:40:10 CDT|
|Last modified:||6/2/2020 14:12:08 CDT|
|Score (*):||38.2569 (normalized score 0.002)|
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 130871 person_id 9 machine Using: Xeon (pool) 4c+4c 3.5GHz what prime notes Command: /home/caldwell/clientpool/4/pfgw64 -t -q"2*103157148^8192+1" 2>&1 PFGW Version 18.104.22.168BIT.20191203.x86_Dev [GWNUM 29.8] Primality testing 2*103157148^8192+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 66.41% 2*103157148^8192+1 is prime! (80.5214s+0.0014s) [Elapsed time: 80.00 seconds] modified 2020-07-07 17:30:10 created 2020-05-03 13:41:02 id 176558
Query times: 0.0002 seconds to select prime, 0.0004 seconds to seek comments.
Printed from the PrimePages <primes.utm.edu> © Chris Caldwell.