181 · 2400849 - 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:181 · 2400849 - 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):L145 : Minovic, Ksieve, NewPGen, Rieselprime, LLR
Decimal Digits:120670   (log10 is 120669.83041049)
Rank (*):45201 (digit rank is 1)
Entrance Rank (*):942
Currently on list? (*):no
Submitted:5/8/2006 01:18:30 UTC
Last modified:3/11/2023 15:54:10 UTC
Removed (*):5/18/2009 08:13:55 UTC
Database id:77742
Status Flags:none
Score (*):40.133 (normalized score 0.0079)

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_id77742
person_id9
machineWinXP P4 2.2GHz M
whatprime
notesCommand: pfgw.exe -n -f -tp -q"181*2^400849-1" 2>&1 PFGW Version 1.2.0 for Windows [FFT v23.8] Primality testing 181*2^400849-1 [N+1, Brillhart-Lehmer-Selfridge] trial factoring to 41661330 Running N+1 test using discriminant 3, base 1+sqrt(3) Calling Brillhart-Lehmer-Selfridge with factored part 100.00% 181*2^400849-1 is prime! (6286.5911s+0.0299s) [Elapsed time: 6287 seconds]
modified2020-07-07 22:30:42
created2006-05-09 13:30:56
id84282

fieldvalue
prime_id77742
person_id9
machineGenToo P3 400MHz
whattrial_divided
notesCommand: /home/caldwell/client/TrialDiv/TrialDiv -q 181 2 400849 -1 2>&1 [Elapsed time: 9.477 seconds]
modified2020-07-07 22:30:42
created2006-07-07 09:27:09
id84747

Query times: 0.0002 seconds to select prime, 0.0003 seconds to seek comments.
Printed from the PrimePages <t5k.org> © Reginald McLean.