A015937 - OEIS

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A015937

Positive integers n such that 2^n == 2^12 (mod n).

1, 2, 4, 6, 8, 12, 16, 18, 20, 22, 23, 24, 32, 36, 40, 42, 48, 60, 62, 64, 68, 72, 80, 84, 89, 96, 120, 126, 128, 132, 144, 156, 160, 168, 180, 192, 204, 228, 240, 252, 256, 276, 288, 312, 320, 336, 340, 348, 352, 360, 372, 384, 420, 444, 462

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OFFSET

1,2

COMMENTS

The odd terms are given by A215613.

For all m, 2^A051446(m)-1 belongs to this sequence.

LINKS

T. D. Noe, Table of n, a(n) for n = 1..1000

OEIS Wiki, 2^n mod n

MATHEMATICA

With[{c=2^12}, Select[Range[1, 6000], Divisible[2^#-c, #]&]] (* Harvey P. Dale, Mar 20 2011 *)

CROSSREFS