Tom Greer


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): L2035, L2125, L4245, L4398, L4972, L5120, L5161, L5402
E-mail address: (e-mail address unpublished)
Username TGreer (entry created on 1/13/2011 03:00:32 UTC)
Database id:2656 (entry last modified on 8/28/2021 18:21:51 UTC)
Active primes:on current list: 120 (unweighted total: 120), rank by number 6
Total primes: number ever on any list: 425 (unweighted total: 425)
Production score: for current list 53 (normalized: 4117), total 53.3551, rank by score 11
Largest prime: 19637361048576 + 1 ‏(‎6598776 digits) via code L4245 on 9/26/2022 22:28:41 UTC
Most recent: 38786700262144 + 1 ‏(‎1989328 digits) via code L4245 on 5/18/2024 02:25:58 UTC
Entrance Rank: mean 672.44 (minimum 13, maximum 4180)

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