John ODonnell


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): L1584, L2181
E-mail address: (e-mail address unpublished)
Web page:
Username: JODonnell (entry created on 08/15/10)
Database id:2375 (entry last modified on 04/15/11)
Active primes:on current list: 1 (unweighted total: 1), rank by number 555
Total primes: number ever on any list: 23 (unweighted total: 23)
Production score: for current list 44 (normalized: 1), total 45.7878, rank by score 955
Largest prime: 1089 · 21669361 + 1 ‏(‎502531 digits) via code L1584 on 12/16/12
Most recent: 2405 · 21129275 + 1 ‏(‎339950 digits) via code L1584 on 08/08/13
Entrance Rank: mean 277.00 (minimum 277, maximum 277)

Descriptive Data: (report abuse)

My name is John O'Donnell and live in Lake Oswego, Oregon. I work for the Bonneville Power Administration in the Information Technology field. I enjoy both the science and sense of community with BOINC distributed computing. I enjoy finding Titan's using PrimeGrid, especially with PPS. Although I do not game, I use my 3.2 billion transistors on my EVGA GTX 470 to help my team SETI.USA stay competitive in the PPS Sieve, and the BOINC statistics. My primary computer, which runs Windows 7 Pro, and is completing a PPS sieve every 7 min 38 sec @ 2,311.00 credit per unit with the most recent Proth Prime Search (Sieve) v1.37 (cuda23). Here are my primary computer's specifications - Intel(R) Core(TM) i7 CPU K 875 at 2.93GHz [Family 6 Model 30 Stepping 5], Memory 4094.05 MB, Coprocessors NVIDIA GeForce GTX 470 (1248MB) driver: 26099. Operating System Microsoft Windows 7 x64 Edition, (06.01.7600.00), BOINC version 6.10.58.

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