login
A015927
Positive integers n such that 2^n == 2^7 (mod n).
10
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
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
KEYWORD
nonn
EXTENSIONS
Edited by Max Alekseyev, Jul 30 2011
STATUS
approved