Prime number primoriel
A prime number primoriel is a number which is lower of one or superior of one compared to a Primorielle and which is also a Prime number. The first eight prime numbers primoriels are
5, 7, 29, 31, 211, 2309,2311,30029
The greatest known prime numbers primoriels are p590# - 1 and p1391# + 1.
Reference
The article on the primorielles ones on http://mathworld.wolfram.com/Primorial.html, since Research Wolfram, the originator of Mathematica 4 (in English).
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