Paul Jobling's SoBSieve


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): SB6, SB7, SB8, SB9, SB10, SB11, SB12
E-mail address: (e-mail address unpublished)
Username SoBSieve (entry created on 1/16/2004 14:47:30 UTC)
Database id:594 (entry last modified on 11/6/2016 18:06:03 UTC)
Program Does *: sieve
Active primes:on current list: 7, rank by number 27
Total primes: number ever on any list: 7
Production score: for current list 53 (normalized: 5295), rank by score 15
Largest prime: 10223 · 231172165 + 1 ‏(‎9383761 digits) via code SB12 on 11/6/2016 18:15:13 UTC
Most recent: 10223 · 231172165 + 1 ‏(‎9383761 digits) via code SB12 on 11/6/2016 18:15:13 UTC
Entrance Rank: mean 6.57 (minimum 4, maximum 10)

Descriptive Data: (report abuse)

SoBSieve is a program written by Paul Jobling to help with the Seventeen Or Bust search to eliminate candidate Sierpinski primes (see for more details). It works by removing those n where k_i.2^n+1 is composite, where k_i is one of the remaining Sierpinski candidates.

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