Yunfei Cheng

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):	L6348
E-mail address:	(e-mail address unpublished)
Web page:	http://zhec.moe/
Username	ycheng	(entry created on 6/4/2026 21:34:24 UTC)
Database id:	6080	(entry last modified on 6/5/2026 05:00:21 UTC)
Active primes:	on current list: 1 (unweighted total: 1), rank by number 518
Total primes:	number ever on any list: 1 (unweighted total: 1)
Production score:	for current list 47 (normalized: 2), rank by score 601
Largest prime:	489887458¹³¹⁰⁷² + 1 ‏(‎1139029 digits) via code L6348 on 6/4/2026 21:34:38 UTC
Most recent:	489887458¹³¹⁰⁷² + 1 ‏(‎1139029 digits) via code L6348 on 6/4/2026 21:34:38 UTC
Entrance Rank:	mean 1405.00 (minimum 1405, maximum 1405)

Descriptive Data: (report abuse)

Surname: Cheng1 (used for alphabetizing and in codes).
Unverified primes are omitted from counts and lists until verification completed.

I am Yunfei Cheng 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.