login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A169681 Decimal expansion of 2^127-1. 19
1, 7, 0, 1, 4, 1, 1, 8, 3, 4, 6, 0, 4, 6, 9, 2, 3, 1, 7, 3, 1, 6, 8, 7, 3, 0, 3, 7, 1, 5, 8, 8, 4, 1, 0, 5, 7, 2, 7 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET
39,2
COMMENTS
The 12th Mersenne prime, A000668(12); 127 = A000043(12). Also, the fifth Catalan number A007013(4). - M. F. Hasler, Jan 09 2013
LINKS
Wikipedia, Mersenne prime
FORMULA
2^127-1 = 2^A000043(12)-1 = A000668(12). - M. F. Hasler, Jan 09 2013
EXAMPLE
170141183460469231731687303715884105727.
MATHEMATICA
IntegerDigits[2^127 - 1] (* Paolo Xausa, Apr 05 2024 *)
PROG
(Magma) Reverse(Intseq(2^127-1)); // Arkadiusz Wesolowski, Oct 18 2014
CROSSREFS
Cf. A169684 = A000668(11), A169685 = A000668(13), A204063 = A000668(14), A248931 = A000668(15), A248932 = A000668(16), A248933 = A000668(17), A248934 = A000668(18), A248935 = A000668(19), A248936 = A000668(20).
Sequence in context: A293530 A199603 A121570 * A202354 A324498 A243908
KEYWORD
nonn,cons,easy,fini,full
AUTHOR
Vincenzo Librandi, Apr 12 2010
EXTENSIONS
Edited by N. J. A. Sloane, Apr 13 2010
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 15 00:37 EDT 2024. Contains 374323 sequences. (Running on oeis4.)