249 · 2251036 - 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:249 · 2251036 - 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):g384 : Tajima, NewPGen, NPLB, PRP, Proth.exe
Decimal Digits:75572   (log10 is 75571.76219085)
Rank (*):54226 (digit rank is 1)
Entrance Rank (*):3013
Currently on list? (*):no
Submitted:11/28/2005 17:07:03 UTC
Last modified:3/11/2023 15:54:10 UTC
Removed (*):11/8/2006 04:47:53 UTC
Database id:76303
Status Flags:none
Score (*):38.691 (normalized score 0.0018)

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_id76303
person_id9
machineWinXP Pentium M 1.7GHz
whatprime
notesCommand: pfgw.exe -n -f -tp -q"249*2^251036-1" 2>&1 PFGW Version 20030811.Win_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] trial factoring to 25268755 Running N+1 test using discriminant 5, base 1+sqrt(5) N+1: 249*2^2510Primality testing 249*2^251036-1 [N+1, Brillhart-Lehmer-Selfridge] Calling Brillhart-Lehmer-Selfridge with factored part 100.00% 249*2^251036-1 is prime! (1987.1764s+0.0012s) 36-1[Elapsed time: 1987 seconds]
modified2020-07-07 22:30:43
created2005-11-28 17:21:52
id81508

Query times: 0.0002 seconds to select prime, 0.0004 seconds to seek comments.
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