Factorial Prime
A Prime of the form 
. 
is Prime for 1, 2, 3, 11, 27, 37, 41, 73, 77, 116, 154, 320, 340, 399, 427,872, 1477, ... (Sloane's A002981) up to a search limit 4850. 
is Prime for 3, 4, 6, 7, 12, 14, 30, 32, 33, 38,94, 116, 324, 379, 469, 546, 974, 1963, 3507, 3610, ... (Sloane's A002982) up to a search limit of 4850.
References
Borning, A. ``Some Results for Buhler, J. P.; Crandall, R. E.; and Penk, M. A. ``Primes of the Form Caldwell, C. K. ``On the Primality of Dubner, H. ``Factorial and Primorial Primes.'' J. Rec. Math. 19, 197-203, 1987. Guy, R. K. Unsolved Problems in Number Theory, 2nd ed. New York: Springer-Verlag, p. 7, 1994. Sloane, N. J. A. SequencesA002981/M0908and A002982/M2321in ``An On-Line Version of the Encyclopedia of Integer Sequences.''http://www.research.att.com/~njas/sequences/eisonline.html and Sloane, N. J. A. and Plouffe, S.The Encyclopedia of Integer Sequences. San Diego: Academic Press, 1995. Temper, M. ``On the Primality of 
and 
.'' Math. Comput. 26, 567-570, 1972.
and 
.'' Math. Comput. 38, 639-643, 1982.
and 
.'' Math. Comput. 64, 889-890, 1995. and 
.'' Math. Comput. 34, 303-304, 1980.
- Structure Constant
- Structure Factor
- Struve Differential Equation
- Struve Function
- Student's t-Distribution
- Student's z-Distribution
- Study's Theorem
- Sturm Chain
- Sturm Function
- Sturmian Separation Theorem
- Sturmian Sequence
- Sturm-Liouville Equation
- Sturm-Liouville Theory
- Sturm Theorem
- Stäckel Determinant
- Stérmer Number
- Stöhr Sequence
- Subalgebra
- Subanalytic
- Subfactorial
- Subfield
- Subgraph
- Subgroup
- Sublime Number
- Submanifold