Harvey Dubner
(Another of the Prime Pages' resources)
The Largest Known Primes Icon
  View this page in:   language help
 
person A titan, as defined by Samuel Yates, is anyone who has found a titanic prime. This page provides data on those that have found these primes. The data below only reflect on the primes currently on the list. (Many of the terms that are used here are explained on another page.)

Proof-code(s): D, CD, DB, DK, WD, gd, c12, c19, x30, p138, x39, c70, c74
E-mail address: harvey@dubner.com
Username: Dubner (entry created on 01/18/2000)
Database id:5 (entry last modified on 06/24/2014)
Active primes:on current list: 21.8333 (unweighted total: 32), rank by number 41
Total primes: number ever on any list: 4516.83 (unweighted total: 4572)
Production score: for current list 35 (normalized: 0), total 43.9518, rank by score 1124
Largest prime: 10205030 + 7047407 · 10102512 + 1 ‏(‎205031 digits) via code D on 11/27/2011
Most recent: primV(64484) ‏(‎11306 digits) via code c74 on 09/28/2014
Entrance Rank: mean 14653.22 (minimum 7, maximum 67197)

Descriptive Data: (report abuse)
Harvey Dubner is an electrical engineer and an amateur number theorist.  He found all of his early primes using the Dubner Crunchers that he and his son designed and sold.  In the early days of PC's, these coprocessors (which fit in IBM compatibles) were used to find an impressive number of record primes.
Error in data above: Abusable keyword name removed. HTML_Tidy reports: line 7 column 122 - Warning: <a> proprietary attribute "removed" line 7 column 122 - Warning: trimming empty <a>

I am Harvey Dubner and I would like to
Edit this page
Submit primes using the proof-code: (a password will be required)
(Reuse an old code if your are using the same programs, projects... Only create a new code if you are doing something differently than in the past. Duplicate codes will be merged.)
Surname: Dubner (used for alphabetizing and in codes)
Unverified primes are omitted from counts and lists until verification completed.