1938662032575 · 21290000 - 1
|Description:||1938662032575 · 21290000 - 1|
|Verification status (*):||Proven|
|Official Comment (*):||Arithmetic progression (1,d=10032831585*2^1290001) [p199]|
|Proof-code(s): (*):||L927 : Brown1, TwinGen, PrimeGrid, LLR|
|Decimal Digits:||388341 (log10 is 388340.98190864)|
|Rank (*):||10921 (digit rank is 70)|
|Entrance Rank (*):||2774|
|Currently on list? (*):||short|
|Submitted:||4/1/2015 10:59:51 CDT|
|Last modified:||10/1/2015 20:20:03 CDT|
|Score (*):||43.7286 (normalized score 0.517)|
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 119668 person_id 9 machine Using: Xeon 4c+4c 3.5GHz what prime notes Command: /home/caldwell/client/llr.pl 1938662032575*2^1290000-1 2>&1 Starting Lucas Lehmer Riesel prime test of 1938662032575*2^1290000-1 Using zero-padded AVX FFT length 128K, Pass1=128, Pass2=1K V1 = 5 ; Computing U0... V1 = 5 ; Computing U0...done.Starting Lucas-Lehmer loop... 1938662032575*2^1290000-1 is prime! (388341 decimal digits) Time : 777.297 sec. [Elapsed time: 12.97 minutes] modified 2020-07-07 17:30:17 created 2015-04-01 11:01:01 id 165280
Query times: 0.0005 seconds to select prime, 0.0008 seconds to seek comments.
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