919983057 · 2138600 - 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:919983057 · 2138600 - 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):g282 : DavisK, Proth.exe
Decimal Digits:41732   (log10 is 41731.721178857)
Rank (*):59008 (digit rank is 1)
Entrance Rank (*):1362
Currently on list? (*):no
Submitted:9/26/2002 21:16:14 CDT
Last modified:9/26/2002 21:16:14 CDT
Removed (*):1/14/2004 19:12:41 CDT
Database id:1476
Status Flags:none
Score (*):36.8591 (normalized score 0.0004)

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.
machineWindows XP P4 1.8GHz
notesPrimality testing 919983057*2^138600-1 [N+1, Brillhart-Lehmer-Selfridge] Calling Brillhart-Lehmer-Selfridge with factored part 99.98% 919983057*2^138600-1 is prime! (620.170000 seconds) PFGW Version 20021217.Win_Dev (Beta 'caveat utilitor') [FFT v22.7 w/P4] Running N+1 test using discriminant 11, base 1+sqrt(11)
modified2003-03-25 11:24:31
created2002-12-21 13:31:33

Query times: 0.0003 seconds to select prime, 0.0004 seconds to seek comments.
Printed from the PrimePages <primes.utm.edu> © Chris Caldwell.