login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A015940 Positive integers n such that 2^n == -3 (mod n). 6

%I

%S 1,5,917,3223,62911,326329,395819,33504053,4446226763,17556128765,

%T 141613728437,5259417592253,113837290408523

%N Positive integers n such that 2^n == -3 (mod n).

%C No other terms below 10^16.

%C Larger term: 18468744643735483963902321985787. - _Max Alekseyev_, Aug 01 2011

%H OEIS Wiki, <a href="/wiki/2^n mod n">2^n mod n</a>

%t Do[ If[ PowerMod[ 2, n, n ] + 3 == n, Print[n]], { n, 1, 10^9, 2 } ]

%Y Cf. A050259.

%K nonn,more

%O 1,2

%A _Robert G. Wilson v_

%E Corrected and extended by Olivier Wittenberg, May 23 2004.

%E a(10)-a(13) from _Max Alekseyev_, Aug 01 2011

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 7 02:20 EDT 2021. Contains 343636 sequences. (Running on oeis4.)