294 · 213918952 - 1

At this site we maintain a list of the 5000 Largest Known Primes which is updated hourly.  This list is the most important PrimePages database: a collection of research, records and results all about prime numbers. This page summarizes our information about one of these primes.

This prime's information:

Description:294 · 213918952 - 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):L5811 : Dettweiler, LLR2, Srsieve, CRUS, LLR
Decimal Digits:2139672   (log10 is 2139671.5616866)
Rank (*):233 (digit rank is 1)
Entrance Rank (*):202
Currently on list? (*):short
Submitted:9/19/2023 15:26:36 UTC
Last modified:9/24/2023 06:37:20 UTC
Database id:136454
Status Flags:none
Score (*):48.9656 (normalized score 51.7427)

Verification data:

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.
fieldvalue
prime_id136454
person_id9
machineUsing: Digital Ocean Droplet
whatprime
notesCommand: /var/www/clientpool/1/pfgw64 -V -f -tp -q"294*213^918952-1" >command_output 2>&1
PFGW Version 4.0.4.64BIT.20221214.x86_Dev [GWNUM 30.11]
Primality testing 294*213^918952-1 [N+1, Brillhart-Lehmer-Selfridge]
trial
Running N+1 test using discriminant 3, base 1+sqrt(3)
Special modular reduction using AVX-512 FFT length 768K, Pass1=128, Pass2=6K, clm=2 on 294*213^918952-1
Detected in MAXERR>0.45 (round off check) in Exponentiator::Iterate
Iteration: 44/7107836 ERROR: ROUND OFF 0.45935>0.45
(Test aborted, try again using the -a1 switch)
Running N+1 test using discriminant 3, base 1+sqrt(3)
Special modular reduction using AVX-512 FFT length 800K, Pass1=128, Pass2=6400, clm=2 on 294*213^918952-1
Detected in MAXERR>0.45 (round off check) in Exponentiator::Iterate
Iteration: 4589/7107836 ERROR: ROUND OFF 0.4606>0.45
(Test aborted, try again using the -a2 (or possibly -a0) switch)
Running N+1 test using discriminant 3, base 1+sqrt(3)
Special modular reduction using AVX-512 FFT length 840K, Pass1=1344, Pass2=640, clm=1 on 294*213^918952-1
Calling Brillhart-Lehmer-Selfridge with factored part 79.51%


294*213^918952-1 is prime! (197317.1594s+0.0268s)
[Elapsed time: 2.28 days]
modified2023-09-24 05:56:40
created2023-09-21 23:08:01
id182288

Query times: 0.0002 seconds to select prime, 0.0002 seconds to seek comments.
Printed from the PrimePages <t5k.org> © Reginald McLean.