9789 · 225136 - 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:9789 · 225136 - 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):g5 : Buddenhagen, Proth.exe
Decimal Digits:7571   (log10 is 7570.6807093383)
Rank (*):80234 (digit rank is 2)
Entrance Rank (*):2778
Currently on list? (*):no
Submitted:12/8/1998 18:39:28 CDT
Last modified:12/8/1998 18:39:28 CDT
Removed (*):4/27/1999 09:15:56 CDT
Database id:20053
Status Flags:none
Score (*):31.5771 (normalized score 0)

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_id20053
person_id9
machineWindows XP P4 1.8GHz
whatprime
notesPrimality testing 9789*2^25136-1 [N+1, Brillhart-Lehmer-Selfridge] Calling Brillhart-Lehmer-Selfridge with factored part 99.95% 9789*2^25136-1 is prime! (19.443000 seconds) PFGW Version 1.1 for Windows Running N+1 test using discriminant 5, base 1+sqrt(5)
modified2003-03-25 11:25:31
created2002-12-09 13:34:23
id34624

Query times: 0.0005 seconds to select prime, 0.0007 seconds to seek comments.
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