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A015925 Positive integers n such that 2^n == 2^5 (mod n). 9
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified August 4 13:19 EDT 2020. Contains 336201 sequences. (Running on oeis4.)