Woodall Number
Numbers of the form
The first few are 1, 7, 23, 63, 159, 383, ... (Sloane's A003261). The only Woodall numbers
for 
which arePrime are for 
, 7755, 9531, 12379, 15822, 18885, 22971, 23005, 98726, ... (Sloane's A014617; Ballinger).See also Cullen Number, Cunningham Number, Fermat Number, Mersenne Number,Sierpinski Number of the First Kind
References
Ballinger, R. ``Cullen Primes: Definition and Status.'' http://vamri.xray.ufl.edu/proths/cullen.html. Guy, R. K. ``Cullen Numbers.'' §B20 in Unsolved Problems in Number Theory, 2nd ed. New York: Springer-Verlag, p. 77, 1994. Leyland, P. ftp://sable.ox.ac.uk/pub/math/factors/woodall. Ribenboim, P. The New Book of Prime Number Records. New York: Springer-Verlag, pp. 360-361, 1996. Sloane, N. J. A. SequencesA014617 andA003261/M4379in ``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.
- Riemann Function
- Riemann Hypothesis
- Riemannian Geometry
- Riemannian Geometry (Non-Euclidean)
- Riemannian Manifold
- Riemannian Metric
- Riemann Integral
- Riemann-Lebesgue Lemma
- Riemann-Mangoldt Function
- Riemann Mapping Theorem
- Riemann P-Differential Equation
- Riemann P-Series
- Riemann-Roch Theorem
- Riemann Series Theorem
- Riemann's Formula
- Riemann-Siegel Functions
- Riemann's Integral Theorem
- Riemann's Moduli Problem
- Riemann's Moduli Space
- Riemann Space
- Riemann Sphere
- Riemann-Stieltjes Integral
- Riemann Sum
- Riemann Surface
- Riemann Tensor