David Underbakke's AthGFNSieve

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 reflects on the primes currently on the list. (Many of the terms that are used here are explained on another page.)

Proof-code(s):

E-mail address:

david9

(at)

underbakke

(dot)

com

Web page:

http://www.underbakke.com/AthGFNsv

Username

AthGFNSieve

(entry created on 1/4/2003 03:35:55 UTC)

Database id:

439

(entry last modified on 5/4/2025 01:07:09 UTC)

Program Does *:

sieve

Active primes:

on current list: 1744, rank by number 4

Total primes:

number ever on any list: 5676

Production score:

for current list 55 (normalized: 18617), total 55.3700, rank by score 5

Largest prime:

3843236^1048576 + 1 ‏(‎6904556 digits) via code L6094 on 12/22/2024 17:04:35 UTC

Most recent:

332896652¹³¹⁰⁷² + 1 ‏(‎1117037 digits) via code L4387 on 5/17/2025 21:05:36 UTC

Entrance Rank:

mean 734.92 (minimum 11, maximum 39098)

Descriptive Data: (report abuse)

AthGFNSv and the 64 bit program AthGfn64 are programs to rapidly presieve Generalized Fermat candidates removing composite numbers. AthGFNSv supports trial division for small ranges and both programs support wide mode true sieve for larger ranges. The 64 bit version is 60%-80% faster.

They can be found at http://www.underbakke.com/AthGFNSv

Surname: AthGFNSieve (used for alphabetizing and in codes).
Unverified primes are omitted from counts and lists until verification completed.

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