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A020228 Pseudoprimes to base 100. 3
9, 33, 91, 99, 153, 259, 303, 451, 481, 561, 657, 703, 909, 949, 1111, 1233, 1241, 1729, 1891, 2047, 2329, 2409, 2701, 2821, 2871, 2981, 3333, 3367, 4141, 4187, 4521, 5461, 5551, 6001, 6533, 6541, 6601, 6931, 7107, 7373, 7471, 7633, 7777, 8149, 8401, 8911 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Composite numbers n such that 100^(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 = 100; 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: A020324 A146171 A146188 * A005939 A020326 A201024

Adjacent sequences:  A020225 A020226 A020227 * A020229 A020230 A020231

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified January 17 18:48 EST 2019. Contains 319251 sequences. (Running on oeis4.)