A275977 Decimal expansion of 2^9689 - 1, the 21st Mersenne prime A000668(21).

4, 7, 8, 2, 2, 0, 2, 7, 8, 8, 0, 5, 4, 6, 1, 2, 0, 2, 9, 5, 2, 8, 3, 9, 2, 9, 8, 6, 6, 0, 0, 0, 5, 9, 0, 9, 7, 4, 1, 4, 9, 7, 1, 7, 2, 4, 0, 2, 2, 3, 6, 5, 0, 0, 8, 5, 1, 3, 3, 4, 5, 1, 0, 9, 9, 1, 8, 3, 7, 8, 9, 5, 0, 9, 4, 2, 6, 6, 2, 9, 7, 0, 2, 7, 8, 9, 2, 7, 6, 8, 6, 1, 1, 2, 7, 0, 7, 8, 9, 4, 5, 8, 6, 8, 2

Offset

2917,1

Links

Arkadiusz Wesolowski, Table of n, a(n) for n = 2917..5833

Wikipedia, Mersenne prime

Formula

2^A000043(21) - 1.

Example

47822027880546120295283929866000590974149717240223650085133451099183789...

Mathematica

First@RealDigits@N[2^9689 - 1, 100] (* G. C. Greubel, Aug 15 2016 *)

Prog

(Magma) Reverse(Intseq(2^9689-1))[1..105];
(PARI) eval(Vec(Str(2^9689-1)))[1..105]

Crossrefs

Cf. A169684 = A000668(11), A169681 = A000668(12), A169685 = A000668(13), A204063 = A000668(14), A248931 = A000668(15), A248932 = A000688(16), A248933 = A000668(17), A248934 = A000668(18), A248935 = A000668(19), A248936 = A000668(20), A275979 = A000668(22), A275980 = A000668(23), A275981 = A000668(24), A275982 = A000668(25), A275983 = A000668(26), A275984 = A000668(27).

Sequence in context: A171548 A296565 A198822 * A151968 A115632 A190260

Adjacent sequences: A275974 A275975 A275976 * A275978 A275979 A275980

Keyword

nonn,cons,easy,fini,full

Author

Arkadiusz Wesolowski, Aug 15 2016

Status

approved