Robert L. Clark


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): g12, L3972
E-mail address:
Username: Clark (entry created on 01/18/00)
Database id:61 (entry last modified on 06/30/18)
Active primes:on current list: 1 (unweighted total: 1), rank by number 548
Total primes: number ever on any list: 91 (unweighted total: 91)
Production score: for current list 44 (normalized: 1), total 47.7467, rank by score 967
Largest prime: 2325 · 21636069 + 1 ‏(‎492510 digits) via code L3972 on 03/22/21
Most recent: 2325 · 21636069 + 1 ‏(‎492510 digits) via code L3972 on 03/22/21
Entrance Rank: mean 4273.00 (minimum 4273, maximum 4273)

Descriptive Data: (report abuse)

Robert Clark has been interested in searching for primes since 1967, and is still loving it. He is a retired software engineer,father, writer, birder, choral singer, amateur astronomer, and bon vivant.

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