primorial prime

A primorial prime is a number that is one less or one more than a primorial and is also a prime number. The first few primorial primes are: 5, 7, 29, 31, 211, 2309, 2311, 30029.

Title primorial prime PrimorialPrime 2013-03-22 16:19:22 2013-03-22 16:19:22 PrimeFan (13766) PrimeFan (13766) 4 PrimeFan (13766) Definition msc 11A41