17719707953475 · 2666666 - 1
(Another of the Prime Pages' resources)
The Largest Known Primes Icon
  View this page in:   language help
 
GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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:17719707953475 · 2666666 - 1
Verification status (*):Proven
Official Comment:
Proof-code(s): (*):L1962 : Carpenter1, TwinGen, PrimeGrid, LLR
Decimal Digits:200700   (log10 is 200699.71154588)
Rank (*):24916 (digit rank is 988)
Entrance Rank (*):3721
Currently on list? (*):no
Submitted:6/9/2011 16:38:03 CDT
Last modified:6/9/2011 17:20:21 CDT
Removed (*):9/4/2011 18:23:12 CDT
Database id:100424
Status Flags:none
Score (*):41.699 (normalized score 0.0963)

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_id100424
person_id9
machineRedHat Virtual STEM Server
whatprime
notesCommand: /home/caldwell/client/llr.pl 17719707953475*2^666666-1 2>&1
Starting Lucas Lehmer Riesel prime test of 17719707953475*2^666666-1
Using Zero Padded IBDWT : Mersenne fftlen = 32768, Used fftlen = 81920
V1 = 5 ; Computing U0...
V1 = 5 ; Computing U0...done.Starting Lucas-Lehmer loop...


17719707953475*2^666666-1 is prime! Time : 899.135 sec.
[Elapsed time: 14.98 minutes]
modified2011-12-27 16:48:32
created2011-06-09 16:43:55
id130412

fieldvalue
prime_id100424
person_id9
machineRedHat P4 P4
whattrial_divided
notesCommand: /home/caldwell/client/TrialDiv/TrialDiv -q 17719707953475 2 666666 -1 2>&1
[Elapsed time: 9.650 seconds]
modified2011-12-27 16:48:32
created2011-06-09 16:48:02
id130413

Query times: 0.0002 seconds to select prime, 0.0003 seconds to seek comments.