2 · 191287901 + 1
|Description:||2 · 191287901 + 1|
|Verification status (*):||Proven|
|Official Comment (*):||Divides Phi(191^287901,2)|
|Unofficial Comments:||This prime has 1 user comment below.|
|Proof-code(s): (*):||g424 : Broadhurst, NewPGen, OpenPFGW, Proth.exe|
|Decimal Digits:||656713 (log10 is 656712.08849398)|
|Rank (*):||2463 (digit rank is 1)|
|Entrance Rank (*):||370|
|Currently on list? (*):||short|
|Submitted:||1/30/2015 10:36:27 CDT|
|Last modified:||1/30/2015 11:20:28 CDT|
|Score (*):||45.3423 (normalized score 2.4236)|
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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 119169 person_id 9 machine Using: Xeon 4c+4c 3.5GHz what prime notes Command: /home/caldwell/client/pfgw/pfgw64 -t -q"2*191^287901+1" 2>&1 PFGW Version 220.127.116.11BIT.20130722.x86_Dev [GWNUM 27.11] Primality testing 2*191^287901+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 100.00% 2*191^287901+1 is prime! (1959.5768s+0.0209s) [Elapsed time: 32.65 minutes] modified 2020-07-07 17:30:17 created 2015-01-30 10:41:02 id 164774
Query times: 0.0002 seconds to select prime, 0.0002 seconds to seek comments.
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