A015925 Positive integers n such that 2^n == 2^5 (mod n).

1, 2, 3, 4, 5, 8, 14, 16, 25, 32, 56, 65, 85, 145, 165, 185, 205, 221, 224, 265, 305, 365, 368, 445, 465, 485, 505, 545, 565, 685, 745, 785, 825, 865, 905, 965, 985, 1022, 1025, 1085, 1145, 1165, 1205, 1285, 1316, 1345, 1385, 1405, 1424, 1465, 1565, 1585, 1685, 1705, 1745

Offset

1,2

Comments

For all m, 2^A128122(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

m = 32; Join[Select[Range[m], Divisible[2^# - m, #] &],
Select[Range[m + 1, 10^6], PowerMod[2, #, #] == m &]] (* Robert Price, Oct 08 2018 *)

Crossrefs

Contains A050993 as a subsequence.

The odd terms form A276968.

Sequence in context: A162901 A333785 A162900 * A140294 A108014 A075721

Adjacent sequences: A015922 A015923 A015924 * A015926 A015927 A015928

Keyword

nonn

Author

Robert G. Wilson v

Extensions

Edited by Max Alekseyev, Jul 30 2011

Status

approved