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A124974 Integers n such that 2^n == 17 (mod n). 7
1, 3, 5, 9, 45, 99, 53559, 1143357, 2027985, 36806085, 1773607905, 3314574181, 1045463125509, 1226640523999, 3567404505159, 28726885591099, 39880799734039, 87977068273719, 106436400721299, 339966033494859, 999567363539883 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Some larger terms: 576541379659648320485

LINKS

Table of n, a(n) for n=1..21.

EXAMPLE

2^45 = 17 + 45*781874935307,

2^99 = 17 + 99*6402275758728431320690420229.

MATHEMATICA

m = 17; Join[Select[Range[m], Divisible[2^# - m, #] &],

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

CROSSREFS

Cf. A033981, A124965, A015911.

Sequence in context: A082703 A125708 A055289 * A215440 A163550 A123220

Adjacent sequences:  A124971 A124972 A124973 * A124975 A124976 A124977

KEYWORD

nonn

AUTHOR

Zak Seidov, Nov 14 2006

EXTENSIONS

Terms 1, 3, 5, 9 prepended by Max Alekseyev, May 20 2011

a(11)-a(21) from Max Alekseyev, May 25 2012

STATUS

approved

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Last modified January 23 02:34 EST 2019. Contains 319365 sequences. (Running on oeis4.)