To be removed soon:   language help

8817 · 2461722 + 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.

Description:8817 · 2461722 + 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):L714 : Sunderland, Srsieve, PrimeGrid, LLR
Decimal Digits:138997   (log10 is 138996.11697881)
Rank (*):36588 (digit rank is 1)
Entrance Rank (*):4010
Currently on list? (*):no
Submitted:7/31/2009 21:49:32 CDT
Last modified:7/31/2009 22:50:21 CDT
Removed (*):10/19/2009 12:09:01 CDT
Database id:89497
Status Flags:none
Score (*):40.5684 (normalized score 0.0266)

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_id89497
person_id9
machineRedHat P4 P4
whattrial_divided
notesCommand: /home/caldwell/client/TrialDiv/TrialDiv -q 8817 2 461722 1 2>&1 [Elapsed time: 9.099 seconds]
modified2020-07-07 17:30:37
created2009-07-31 21:52:01
id108361

fieldvalue
prime_id89497
person_id9
machineRedHat P4 P4
whatprime
notesCommand: /home/caldwell/client/pfgw -t -q"8817*2^461722+1" 2>&1 PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] Primality testing 8817*2^461722+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 13 Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(57344,20) to FFT(57344,19) Reduced from FFT(57344,19) to FFT(57344,18) Reduced from FFT(57344,18) to FFT(57344,17) 923480 bit request FFT size=(57344,17) Calling Brillhart-Lehmer-Selfridge with factored part 100.00% 8817*2^461722+1 is prime! (1419.3700s+0.0000s) [Elapsed time: 23.90 minutes]
modified2020-07-07 17:30:37
created2009-07-31 22:23:32
id108365

Query times: 0.0005 seconds to select prime, 0.0007 seconds to seek comments.
Printed from the PrimePages <primes.utm.edu> © Chris Caldwell.