Generalized repunit prime (base 194).
For base 190, I found R2, R13, R89, R157, R643, R673.
For base 191, I found R17, R1399.
For base 192, I found R2, R3, R7, R613.
For base 193, I found R5, R317.
For base 194, I found R3, R8807.
For base 195, I found R11, R73, R379, R2687.

To be completed...