Good Prime
A Prime 
is called ``good'' if
for all
(there is a typo in Guy 1994 in which the 
s are replaced by 1s). There are infinitely manygood primes, and the first few are 5, 11, 17, 29, 37, 41, 53, ... (Sloane's A028388).See also Andrica's Conjecture, Pólya Conjecture
References
Guy, R. K. ```Good' Primes and the Prime Number Graph.'' §A14 in Unsolved Problems in Number Theory, 2nd ed. New York: Springer-Verlag, pp. 32-33, 1994. Sloane, N. J. A. Sequence A028388in ``The On-Line Version of the Encyclopedia of Integer Sequences.''http://www.research.att.com/~njas/sequences/eisonline.html.
- Trisectrix of Maclaurin
- Triskaidecagon
- Triskaidekaphobia
- Tritangent
- Tritangent Triangle
- Trivial
- Trivialization
- Trochoid
- Tromino
- True
- Truncate
- Truncated Cone
- Truncated Cube
- Truncated Cuboctahedron
- Truncated Dodecadodecahedron
- Truncated Dodecahedron
- Truncated Great Dodecahedron
- Truncated Great Icosahedron
- Truncated Hexahedron
- Truncated Icosahedron
- Truncated Icosidodecahedron
- Truncated Octahedral Number
- Truncated Octahedron
- Truncated Polyhedron
- Truncated Pyramid