1071 · 21647962 - 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:1071 · 21647962 - 1
Verification status (*):Proven
Official Comment (*):[none]
Proof-code(s): (*):L1828 : Benson, PSieve, Srsieve, Rieselprime, LLR
Decimal Digits:496090   (log10 is 496089.02350388)
Rank (*):4706 (digit rank is 1)
Entrance Rank (*):851
Currently on list? (*):yes
Submitted:4/1/2014 16:33:09 CDT
Last modified:4/1/2014 20:22:41 CDT
Database id:117539
Status Flags:TrialDiv
Score (*):44.481 (normalized score 1.0389)

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.
machineWinXP Dual Core 2.6GHz 64-bit Laptop
notesCommand: cllr64.exe -q"1071*2^1647962-1" 2>&1 -d Starting Lucas Lehmer Riesel prime test of 1071*2^1647962-1 Using AVX FFT length 112K, Pass1=448, Pass2=256 V1 = 3 ; Computing U0... V1 = 3 ; Computing U0...done. Starting Lucas-Lehmer loop... [Elapsed time: 1950 seconds]
modified2020-07-07 17:30:17
created2014-04-01 19:32:14

Query times: 0.0006 seconds to select prime, 0.0007 seconds to seek comments.
Printed from the PrimePages <primes.utm.edu> © Chris Caldwell.