A248933 Decimal expansion of 2^2281 - 1, the 17th Mersenne prime A000668(17).

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

Offset: 687

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.

The digits of this prime were published on page 167 of Nordisk Mathematisk Tidskrift 2 (1954).

Examples

			44608755718375842957115170640210180988620863241285990111199121996340468...
		

Links

• Arkadiusz Wesolowski, Table of n, a(n) for n = 687..1373
• 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), A248932 = A000668(16), A248934 = A000668(18), A248935 = A000668(19), A248936 = A000668(20).

Programs

Magma

Reverse(Intseq(2^2281-1));

Mathematica

RealDigits[2^2281 - 1, 10, 100][[1]] (* G. C. Greubel, Oct 03 2017 *)

PARI

eval(Vec(Str(2^2281-1)))

Formula

Equals 2^A000043(17) - 1.