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A015927 Positive integers n such that 2^n == 2^7 (mod n). 8
1, 2, 3, 4, 7, 8, 15, 16, 28, 32, 49, 62, 64, 91, 112, 128, 133, 196, 217, 255, 259, 301, 427, 448, 469, 511, 527, 553, 679, 721, 763, 784, 889, 973, 992, 1015, 1057, 1099, 1141, 1168, 1267, 1351, 1393, 1477, 1561, 1603, 1687, 1897, 1939, 1981, 2107, 2149, 2191, 2317, 2359, 2443, 2569, 2611, 2653 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

For all m, 2^A015922(m)-1 belongs to this sequence.

LINKS

Seiichi Manyama, Table of n, a(n) for n = 1..10000

OEIS Wiki, 2^n mod n

MATHEMATICA

Select[Range[3000], PowerMod[2, #, #]==PowerMod[2, 7, #]&] (* Harvey P. Dale, Mar 15 2018 *)

CROSSREFS

Contains A208155 as a subsequence.

The odd terms form A276969.

Sequence in context: A240690 A113050 A278180 * A097110 A116961 A300486

Adjacent sequences:  A015924 A015925 A015926 * A015928 A015929 A015930

KEYWORD

nonn

AUTHOR

Robert G. Wilson v

EXTENSIONS

Edited by Max Alekseyev, Jul 30 2011

STATUS

approved

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Last modified November 13 17:34 EST 2019. Contains 329106 sequences. (Running on oeis4.)