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: 70965694293 · 2200006 - 1 Verification status (*): Proven Official Comment: Twin (p) Proof-code(s): (*): L95 : Urushi, LLR Decimal Digits: 60219   (log10 is 60218.656361226) Rank (*): 48901 (digit rank is 2) Entrance Rank (*): 45730 Currently on list? (*): short Submitted: 4/1/2016 20:38:55 CDT Last modified: 4/2/2016 09:20:03 CDT Database id: 121505 Status Flags: TrialDiv Score (*): 37.9907 (normalized score 0.0027)

Archival tags:

There are certain forms classed as archivable: these prime may (at times) remain on this list even if they do not make the Top 5000 proper.  Such primes are tracked with archival tags.

Twin Primes (archivable *)

Prime on list: yes, rank 5
Subcategory: "Twin (p)"
(archival tag id 218309, tag last modified 2017-07-04 19:20:06)

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.

field value prime_id 121505 person_id 9 machine Using: Xeon 4c+4c 3.5GHz what prime notes Command: /home/caldwell/client/llr.pl 70965694293*2^200006-1 2>&1 Starting Lucas Lehmer Riesel prime test of 70965694293*2^200006-1 Using zero-padded AVX FFT length 20K, Pass1=320, Pass2=64 V1 = 5 ; Computing U0... V1 = 5 ; Computing U0...done.Starting Lucas-Lehmer loop... 70965694293*2^200006-1 is prime! (60219 decimal digits) Time : 18.190 sec. [Elapsed time: 18.00 seconds] modified 2016-04-08 12:40:26 created 2016-04-01 20:41:38 id 167140