Stephen R Cilliers

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):	L1595, L1866, L3553, L6351
E-mail address:	(e-mail address unpublished)
Web page:	http://www.cliffeng.com
Username	SRCilliers	(entry created on 8/16/2010 14:15:51 UTC)
Database id:	2377	(entry last modified on 7/14/2026 03:12:57 UTC)
Active primes:	on current list: 2 (unweighted total: 2), rank by number 357
Total primes:	number ever on any list: 94 (unweighted total: 94)
Production score:	for current list 47 (normalized: 3), total 48.4109, rank by score 508
Largest prime:	495874722¹³¹⁰⁷² + 1 ‏(‎1139720 digits) via code L6351 on 7/14/2026 03:13:05 UTC
Most recent:	495874722¹³¹⁰⁷² + 1 ‏(‎1139720 digits) via code L6351 on 7/14/2026 03:13:05 UTC
Entrance Rank:	mean 747.50 (minimum 65, maximum 1430)

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

I am Stephen R Cilliers and I would like to

(Reuse an old code if your are using the same programs, projects... Only create a new code if you are doing something differently than in the past. Duplicate codes will be merged.