A015927 Positive integers n such that 2^n == 2^7 (mod n).

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

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: A113050 A278180 A368448 * 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