primecrunch.com

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.)

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Proof-code(s):	L4518, A46
E-mail address:	(e-mail address unpublished)
Web page:	https://primecrunch.com
Username	primecrunch	(entry created on 1/14/2017 20:55:49 UTC)
Database id:	4682	(entry last modified on 3/29/2026 22:56:30 UTC)
Active primes:	on current list: 5 (unweighted total: 10), rank by number 189
Total primes:	number ever on any list: 11 (unweighted total: 22)
Production score:	for current list 48 (normalized: 10), total 48.8124, rank by score 319
Largest prime:	1007 · 2^4332776 - 1 ‏(‎1304299 digits) via code A46 on 12/23/2025 10:02:57 UTC
Most recent:	1007 · 2^4332776 - 1 ‏(‎1304299 digits) via code A46 on 12/23/2025 10:02:57 UTC
Entrance Rank:	mean 1541.40 (minimum 943, maximum 2555)

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primecrunch is a distributed computing project searching for large prime numbers of the form k·2^n-1 (Riesel primes). Volunteers run a lightweight client that downloads chunks of work, tests candidate numbers for primality, and reports results back.

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

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(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.