A248934 Decimal expansion of 2^3217 - 1, the 18th Mersenne prime A000668(18).

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

Offset

969,1

Comments

The prime was found on September 8, 1957, by Hans Riesel, using BESK.

Links

Arkadiusz Wesolowski, Table of n, a(n) for n = 969..1937

Hans Riesel, A New Mersenne Prime, Mathematics of Computation, vol. 12 (1958), p. 60.

Wikipedia, Mersenne prime

Formula

Equals 2^A000043(18) - 1.

Example

25911708601320262777624676792244153094181888755312542730397492316187401...

Mathematica

RealDigits[2^3217 - 1, 10, 100][[1]] (* G. C. Greubel, Oct 03 2017 *)

Prog

(Magma) Reverse(Intseq(2^3217-1));
(PARI) eval(Vec(Str(2^3217-1)))

Crossrefs

Cf. A169684 = A000668(11), A169681 = A000668(12), A169685 = A000668(13), A204063 = A000668(14), A248931 = A000668(15), A248932 = A000668(16), A248933 = A000668(17), A248935 = A000668(19), A248936 = A000668(20).

Sequence in context: A021390 A201934 A019802 * A011432 A347345 A324835

Adjacent sequences: A248931 A248932 A248933 * A248935 A248936 A248937

Keyword

nonn,cons,easy,fini,full

Author

Arkadiusz Wesolowski, Oct 17 2014

Status

approved