A Pierpont prime is a prime $p$ that can be written as $$p=2^u 3^v + 1.$$ What is known about Pierpont primes? I'm not a number theorist, and the best I can find is http://en.wikipedia.org/wiki/Pierpont_prime

The few references given are all rather dated. Pierpont primes seem to have interesting connections to geometry. But again there are no references given. I'm interested in Pierpont primes because $\mathbb{Z}_p^\times$ has plenty of easy-to-find generators with smooth order.

I would like to know that Pierpont primes are plentiful, as numerical evidence suggests. It seems that it is still open as to whether or not there are infinitely many.

Any pointers are much appreciated.