The Prime Pages: David Underbakke

David Underbakke
(Another of the Prime Pages' resources)

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):

g144, x22, g205, g216, p53, p57, x35, p100, g294, g295, p101, g359, L99, p222, p259

E-mail address:

david9

(at)

underbakke

(dot)

com

Username:

Underbakke

(entry created on 06/06/2000)

Database id:

260

(entry last modified on 10/16/2009)

Active primes:

on current list: 34 (unweighted total: 36), rank by number 29

Total primes:

number ever on any list: 3195.83 (unweighted total: 3725)

Production score:

for current list 46 (normalized: 247), total 46.4924, rank by score 49

Largest prime:

386892¹³¹⁰⁷²+1 ‏(‎732377 digits) via code p259 on 10/14/2009

Most recent:

386892¹³¹⁰⁷²+1 ‏(‎732377 digits) via code p259 on 10/14/2009

Entrance Rank:

mean 8642.64 (minimum 6, maximum 20089)

Descriptive Data: (report abuse)

David is independent software developer from Minnesota, USA. One of his hobbies includes writing the sieving (AthGfn64) and probability testing software (GenefX64) used in his searches. Proth or PFGW are only used in the final proof/double check for probable primes found.

I am David Underbakke and I would like to

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Submit primes using the proof-code: (a password will be required)
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Surname: Underbakke (used for alphabetizing and in codes)
Unverified primes are omitted from counts and lists until verification completed.