383 · 2172968 - 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:383 · 2172968 - 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):g276 : Oita, Proth.exe
Decimal Digits:52072   (log10 is 52071.139488781)
Rank (*):60369 (digit rank is 1)
Entrance Rank (*):3026
Currently on list? (*):no
Submitted:2/22/2004 23:20:03 UTC
Last modified:3/11/2023 15:54:10 UTC
Removed (*):11/3/2004 02:11:45 UTC
Database id:68931
Status Flags:none
Score (*):37.5423 (normalized score 0.0005)

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_id68931
person_id9
machineLinux P4 2.8GHz
whatprime
notesCommand: /home/caldwell/client/llr.pl 383*2^172968-1 2>&1 Starting Lucas Lehmer Riesel prime test of 383*2^172968-1 V1 = 4 ; Computing U0... Done Computing U0. Starting Lucas-Lehmer loop... 383*2^172968-1 is prime! Time : 1794.867 sec.
modified2020-07-07 22:30:46
created2004-02-22 23:55:49
id73884

Query times: 0.0017 seconds to select prime, 0.0063 seconds to seek comments.
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