p repeated p times.
Carlos Rivera asks this:
the smallest prime (or at least a prp) of this type:
Q. Send your solution.
Contributions came from Jan van Delden, and Simon Cavegn
Jan wrote on October 21, 2019
I computed a few until p=1487. The largest number I computed has
565032 digits. I didnít find any prime (or prp) solution.
Simon wrote on October 25, 2019
Did not find a prime solution. Searched up to the 254th prime p =
1609. That number has 676888 digits and is not prime.