Peter Grobstich


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): g267, p162
E-mail address:
Username Grobstich (entry created on 1/11/2002 12:43:30 UTC)
Database id:344 (entry last modified on 3/28/2006 17:16:17 UTC)
Active primes:on current list: 3 (unweighted total: 3), rank by number 277
Total primes: number ever on any list: 369.333 (unweighted total: 370)
Production score: for current list 45 (normalized: 2), total 46.3977, rank by score 819
Largest prime: 17 · 21990299 + 1 ‏(‎599141 digits) via code g267 on 3/16/2006 07:49:28 UTC
Most recent: 31735 · 2404874 + 1 ‏(‎121884 digits) via code g267 on 3/23/2009 13:29:53 UTC
Entrance Rank: mean 27.00 (minimum 21, maximum 36)

Descriptive Data: (report abuse)

I work as professor at the University of Applied Sciences in Neubrandenburg /Germany. My subjects are Mathematics and Computer-Algebra-Systems. I use to prove primes these programs: NewPGen, PRP and Proth.

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