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A015935 Positive integers n such that 2^n == 2^11 (mod n). 8
1, 2, 3, 4, 8, 11, 14, 15, 16, 31, 32, 35, 51, 56, 64, 121, 128, 146, 224, 256, 341, 451, 455, 496, 508, 512, 671, 781, 896, 1024, 1111, 1235, 1271, 1441, 1547, 1661, 1736, 1991, 2048, 2091, 2101, 2321, 2651, 2761, 2981, 3091, 3421, 3584, 3641, 3731, 3751, 4064, 4088, 4403, 4411, 4631, 4741, 5071, 5401, 5731, 5951, 6171, 6191, 6281, 6386, 6611, 6851, 6941, 7051, 7271, 7601, 7711, 7936, 8261, 8371, 8435, 8456, 8921 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

For all m, 2^A128124(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 = 2^11; Join[Select[Range[m], Divisible[2^# - m, #] &],

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

PROG

(PARI) isok(n) = Mod(2, n)^n == Mod(2, n)^11; \\ Michel Marcus, Oct 08 2018

CROSSREFS

The odd terms form A276971.

Sequence in context: A050727 A295323 A102951 * A135909 A046812 A269797

Adjacent sequences:  A015932 A015933 A015934 * A015936 A015937 A015938

KEYWORD

nonn

AUTHOR

Robert G. Wilson v

EXTENSIONS

Edited by Max Alekseyev, Jul 30 2011

STATUS

approved

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Last modified November 16 19:17 EST 2019. Contains 329201 sequences. (Running on oeis4.)