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The Other Prime Search
The Other Prime Search (TOPS) is a prime searching project established in 2011 by Predrag Minovic (Kosmaj) and Thomas Ritschel (Thomas11).
The initial project description was as follows:
 Search for large generalized Cullen/Woodall primes. Breaking records, finding primes for primeless bases! In the future we plan to expand to nearrepdigits, palindromes and other infrequently searched forms.
So far the following subprojects have been addressed:
 (1) Generalized Cullen/Woodall primes, started in 2011.
 (2) Irregular primes (Bernoulli and Euler), started in 2013.
 (3) Consecutive primes in arithmetic progression.
 (4) Cunningham chains and Sophie Germain primes.
 (5) Nearrepdigit primes.
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Ongoing 

Terminated 