To be removed soon:   language help

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

g244, g289, g295, g296, g297 ... ... L5205, L5206, L5221, L5222, L5225
E-mail address:
Web page:
Username: AthGFNSieve (entry created on 01/03/2003)
Database id:439 (entry last modified on 01/15/2021)
Program Does *: sieve
Active primes:on current list: 1263, rank by number 4
Total primes: number ever on any list: 2305
Production score: for current list 54 (normalized: 17507), total 54.0506, rank by score 4
Largest prime: 10590941048576 + 1 ‏(‎6317602 digits) via code L4720 on 11/04/2018
Most recent: 10241365065536 + 1 ‏(‎524967 digits) via code L5225 on 01/15/2021
Entrance Rank: mean 1832.10 (minimum 11, maximum 49141)

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

Error in data above: HTML_Tidy reports: line 8 column 63 - Warning: inserting implicit <p> line 7 column 1 - Warning: trimming empty <p> line 8 column 63 - Warning: trimming empty <p>

Surname: AthGFNSieve (used for alphabetizing and in codes)
Unverified primes are omitted from counts and lists until verification completed.
I administer David Underbakke's AthGFNSieve and I would like to
Edit this page
Printed from the PrimePages <> © Chris Caldwell.