Generalized repunit prime (base 233).
For base 229, I found R11, R29.
For base 230, I found R5333.
For base 231, I found R3, R6907.
For base 232, I found R2, R953, R2801, R4111.
For base 233, I found R113, R9511.
For base 234, I found R61, R89, R97, R1381, R9011.

To be completed...