Information as of 2020-04-15: Riesel primes 4000<k<4200 done.

Done history entries/primes for Riesel primes 4000<k<4200 (Sources see here)
Done history entries for Riesel primes k<300 (Sources see here)
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Carol/Kynea primes of the form (20ⁿ∓1)²-2

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Current data

Base :	20
Max n :	100,000
Date :	2019-06-08

C 09 : 1, 2, 53, 183, 1281, 1300, 8041, 29936, 72820

K 13 : 1, 15, 44, 77, 141, 208, 304, 1169, 3359, 5050, 22431, 34935, 92990

History

2019-06-08: Checked to n = 100000, Mark Rodenkirch
2019-06-02: Found n = 92990, Mark Rodenkirch
2016-05-05: Checked to n = 74000, Serge Batalov
2016-04-20: Checked to n = 61385, Serge Batalov

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Carol-Kynea prime