Harvey Dubner
(Another of the Prime Pages' resources)
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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
E-mail address: harvey@dubner.com
Username: Dubner (entry created on 01/18/2000)
Database id:5 (entry last modified on 01/09/2014)
Active primes:on current list: 19.3333 (unweighted total: 27), rank by number 39
Total primes: number ever on any list: 4514.33 (unweighted total: 4567)
Production score: for current list 35 (normalized: 0), total 43.9518, rank by score 1054
Largest prime: 10205030 + 7047407 · 10102512 + 1 ‏(‎205031 digits) via code D on 11/27/2011
Most recent: V(89849) ‏(‎18778 digits) via code c70 on 01/09/2014
Entrance Rank: mean 5102.33 (minimum 7, maximum 58261)

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.

I am Harvey Dubner and I would like to
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Surname: Dubner (used for alphabetizing and in codes)
Unverified primes are omitted from counts and lists until verification completed.