A Brier number is a number that is both a Riesel number and a Sierpiński number of the second kind, i.e., a number such that for all , the numbers and are composite. The first few are 878503122374924101526292469, 3872639446526560168555701047, 623506356601958507977841221247, ... (OEIS A076335).
Brier Number
See also
Riesel Number, Sierpiński Number of the Second KindExplore with Wolfram|Alpha
References
Gallot, Y. "A Search for Some Small Brier Numbers." http://perso.wanadoo.fr/yves.gallot/papers/smallbrier.html.McLean, J. "Brier Numbers." http://www.glasgowg43.freeserve.co.uk/brier2.htmRivera, C. "Problems & Puzzles: Problem 029.-Brier Numbers." http://www.primepuzzles.net/problems/prob_029.htm.Sloane, N. J. A. Sequence A076335 in "The On-Line Encyclopedia of Integer Sequences."Referenced on Wolfram|Alpha
Brier NumberCite this as:
Weisstein, Eric W. "Brier Number." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/BrierNumber.html