9221 · 211392194 - 1
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|Description:||9221 · 211392194 - 1|
|Verification status (*):||Proven|
|Official Comment (*):||[none]|
|Unofficial Comments:||This prime has 1 user comment below.|
|Proof-code(s): (*):||L5267 : Schnur, LLR2, Srsieve, PrimeGrid, LLR|
|Decimal Digits:||3429397 (log10 is 3429396.0752013)|
|Rank (*):||63 (digit rank is 1)|
|Entrance Rank (*):||44|
|Currently on list? (*):||short|
|Submitted:||2/7/2021 18:41:28 CDT|
|Last modified:||2/11/2021 21:20:22 CDT|
|Score (*):||50.4109 (normalized score 336.5948)|
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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 131777 person_id 9 machine Using: Xeon (pool) 4c+4c 3.5GHz what prime notes Command: /home/caldwell/clientpool/4/pfgw64 -tp -q"9221*2^11392194-1" 2>&1 PFGW Version 22.214.171.124BIT.20191203.x86_Dev [GWNUM 29.8] Primality testing 9221*2^11392194-1 [N+1, Brillhart-Lehmer-Selfridge] Running N+1 test using discriminant 3, base 1+sqrt(3) Detected in MAXERR>0.45 (round off check) in Exponentiator::Iterate Iteration: 22/11392209 ERROR: ROUND OFF 0.5>0.45 (Test aborted, try again using the -a1 switch) Running N+1 test using discriminant 3, base 1+sqrt(3) Calling Brillhart-Lehmer-Selfridge with factored part 100.00% 9221*2^11392194-1 is prime! (354797.4122s+0.0019s) [Elapsed time: 4.11 days] modified 2021-04-20 17:39:25 created 2021-02-07 18:46:02 id 177475