A169681 Decimal expansion of 2^127-1.

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

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

Table of n, a(n) for n=39..77.

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

Adjacent sequences: A169678 A169679 A169680 * A169682 A169683 A169684

Keyword

nonn,cons,easy,fini,full

Author

Vincenzo Librandi, Apr 12 2010

Extensions

Edited by N. J. A. Sloane, Apr 13 2010

Status

approved