291 · 24708553 + 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:291 · 24708553 + 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):L5308 : Krauss, LLR2, PSieve, Srsieve, PrimeGrid, LLR
Decimal Digits:1417419   (log10 is 1417418.1530666)
Rank (*):530 (digit rank is 1)
Entrance Rank (*):499
Currently on list? (*):short
Submitted:2/19/2024 22:30:33 UTC
Last modified:2/20/2024 18:37:15 UTC
Database id:137495
Status Flags:none
Score (*):47.703 (normalized score 15.4201)

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_id137495
person_id9
machineUsing: Digital Ocean Droplet
whatprime
notesCommand: /var/www/clientpool/1/pfgw64 -V -f -t -q"291*2^4708553+1" >command_output 2>&1
PFGW Version 4.0.4.64BIT.20221214.x86_Dev [GWNUM 30.11]
Primality testing 291*2^4708553+1 [N-1, Brillhart-Lehmer-Selfridge]
trial


Running N-1 test using base 5
Special modular reduction using all-complex AVX-512 FFT length 300K, Pass1=960, Pass2=320, clm=1 on 291*2^4708553+1
Calling Brillhart-Lehmer-Selfridge with factored part 100.00%


291*2^4708553+1 is prime! (7711.9418s+0.0013s)
[Elapsed time: 2.14 hours]
modified2024-02-20 17:49:48
created2024-02-20 15:41:13
id183337

Query times: 0.0004 seconds to select prime, 0.0004 seconds to seek comments.
Printed from the PrimePages <t5k.org> © Reginald McLean.