435 · 21077677 - 1
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At this site we maintain a list of the 5000 Largest Known Primes which is updated hourly. This list is the most important databases at The Prime Pages: 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:

field (help)value
Description:435 · 21077677 - 1
Verification status (*):Proven
Official Comment:
Proof-code(s): (*):L2519 : Schmidt2, PSieve, Srsieve, NPLB, LLR
Decimal Digits:324416   (log10 is 324415.74112643)
Rank (*):14456 (digit rank is 1)
Entrance Rank (*):929
Currently on list? (*):no
Submitted:12/29/2011 04:39:36 CDT
Last modified:12/29/2011 05:50:26 CDT
Removed (*):12/27/2013 18:05:33 CDT
Database id:103808
Status Flags:none
Score (*):43.1758 (normalized score 0.3657)

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_id103808
person_id9
machineRedHat P4 P4
whattrial_divided
notesCommand: /home/caldwell/client/TrialDiv/TrialDiv -q 435 2 1077677 -1 2>&1
[Elapsed time: 10.346 seconds]
modified2012-02-19 19:07:48
created2011-12-29 04:48:01
id137205

fieldvalue
prime_id103808
person_id9
machineRedHat P4 P4
whatprime
notesCommand: /home/caldwell/client/llr.pl 435*2^1077677-1 2>&1
Starting Lucas Lehmer Riesel prime test of 435*2^1077677-1
Using Irrational Base DWT : Mersenne fftlen = 57344, Used fftlen = 81920
V1 = 17 ; Computing U0...
V1 = 17 ; Computing U0...done.
Starting Lucas-Lehmer loop...

435*2^1077677-1 is prime! Time : 2547.351 sec.
[Elapsed time: 42.45 minutes]
modified2012-02-19 19:07:48
created2011-12-29 04:53:01
id137206

Query times: 0.0004 seconds to select prime, 0.0006 seconds to seek comments.