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A020220 Pseudoprimes to base 92. 1
21, 39, 65, 91, 93, 105, 217, 231, 273, 301, 341, 403, 451, 465, 559, 561, 651, 861, 1001, 1085, 1105, 1209, 1271, 1333, 1365, 1393, 1661, 1729, 2465, 2587, 2701, 2821, 3171, 3731, 3781, 3913, 4033, 4123, 4371, 4641, 4681, 5565, 6045, 6169, 6191, 6697, 7161 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Composite numbers n such that 92^(n-1) == 1 (mod n). - Michel Lagneau, Feb 18 2012

LINKS

T. D. Noe, Table of n, a(n) for n = 1..1000

Index entries for sequences related to pseudoprimes

MATHEMATICA

base = 92; t = {}; n = 1; While[Length[t] < 100, n++; If[! PrimeQ[n] && PowerMod[base, n-1, n] == 1, AppendTo[t, n]]]; t (* T. D. Noe, Feb 21 2012 *)

CROSSREFS

Cf. A001567 (pseudoprimes to base 2).

Sequence in context: A221048 A182297 A270667 * A251122 A084856 A070666

Adjacent sequences:  A020217 A020218 A020219 * A020221 A020222 A020223

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified May 31 13:01 EDT 2020. Contains 334748 sequences. (Running on oeis4.)