

A056216


Primes p for which the period of reciprocal = (p1)/11.


2



353, 3499, 10429, 13619, 15269, 20219, 20593, 23057, 23189, 24091, 25741, 30713, 35509, 38567, 45233, 49171, 57179, 57223, 60149, 63691, 63977, 67783, 77023, 85229, 88463, 90619, 91367, 93941, 96779, 108967, 109913, 110221, 112069
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OFFSET

1,1


COMMENTS

Cyclic numbers of the eleventh degree (or eleventh order): the reciprocals of these numbers belong to one of eleven different cycles. Each cycle has the (number minus 1)/11 digits.


LINKS

Table of n, a(n) for n=1..33.
Index entries for sequences related to decimal expansion of 1/n


MATHEMATICA

f[n_Integer] := Block[{ds = Divisors[n  1]}, (n  1)/Take[ ds, Position[ PowerMod[ 10, ds, n], 1] [[1, 1]]] [[ 1]]]; Select[ Prime[ Range[4, 11000]], f[ # ] == 11 &]


CROSSREFS

Sequence in context: A122718 A300364 A098678 * A101219 A212238 A134820
Adjacent sequences: A056213 A056214 A056215 * A056217 A056218 A056219


KEYWORD

nonn,base


AUTHOR

Robert G. Wilson v, Aug 02 2000


EXTENSIONS

Edited by N. J. A. Sloane, Apr 30 2007


STATUS

approved



