A248932 Decimal expansion of 2^2203 - 1, the 16th Mersenne prime A000668(16).

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

Offset: 664

Author

Arkadiusz Wesolowski, Oct 17 2014

Keywords

• nonn
• cons
• easy
• fini
• full

Comments

The 13th through the 17th Mersenne primes were found in 1952 by Raphael M. Robinson, using SWAC.

Examples

			14759799152141802350848986227373817363120661453331697751477712164785702...
		

Links

• Arkadiusz Wesolowski, Table of n, a(n) for n = 664..1327
• D. H. Lehmer, Two New Mersenne Primes, Mathematics of Computation, vol. 7, No. 41 (1952), p. 72.
• Wikipedia, Mersenne prime

Crossrefs

Cf. A169684 = A000668(11), A169681 = A000668(12), A169685 = A000668(13), A204063 = A000668(14), A248931 = A000668(15), A248933 = A000668(17), A248934 = A000668(18), A248935 = A000668(19), A248936 = A000668(20).

Programs

Magma

Reverse(Intseq(2^2203-1));

Mathematica

RealDigits[2^2203-1,10,120][[1]] (* Harvey P. Dale, Oct 09 2017 *)

PARI

eval(Vec(Str(2^2203-1)))

Formula

2^A000043(16) - 1.