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 A248931 Decimal expansion of 2^1279 - 1, the 15th Mersenne prime A000668(15). 17
 1, 0, 4, 0, 7, 9, 3, 2, 1, 9, 4, 6, 6, 4, 3, 9, 9, 0, 8, 1, 9, 2, 5, 2, 4, 0, 3, 2, 7, 3, 6, 4, 0, 8, 5, 5, 3, 8, 6, 1, 5, 2, 6, 2, 2, 4, 7, 2, 6, 6, 7, 0, 4, 8, 0, 5, 3, 1, 9, 1, 1, 2, 3, 5, 0, 4, 0, 3, 6, 0, 8, 0, 5, 9, 6, 7, 3, 3, 6, 0, 2, 9, 8, 0, 1, 2, 2, 3, 9, 4, 4, 1, 7, 3, 2, 3, 2, 4, 1, 8, 4, 8, 4, 2, 4 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 386,3 COMMENTS The 13th through the 17th Mersenne primes were found in 1952 by Raphael M. Robinson, using SWAC. LINKS Arkadiusz Wesolowski, Table of n, a(n) for n = 386..771 D. H. Lehmer, A New Mersenne Prime, Mathematics of Computation, vol. 6, No. 39 (1952), p. 205. Wikipedia, Mersenne prime FORMULA Equals 2^A000043(15) - 1. EXAMPLE 10407932194664399081925240327364085538615262247266704805319112350403608... MATHEMATICA RealDigits[2^1279 - 1, 10, 100][[1]] (* G. C. Greubel, Oct 03 2017 *) PROG (MAGMA) Reverse(Intseq(2^1279-1)); (PARI) eval(Vec(Str(2^1279-1))) CROSSREFS Cf. A169684 = A000668(11), A169681 = A000668(12), A169685 = A000668(13), A204063 = A000668(14), A248932 = A000668(16), A248933 = A000668(17), A248934 = A000668(18), A248935 = A000668(19), A248936 = A000668(20). Sequence in context: A298617 A221596 A195286 * A200501 A141433 A019111 Adjacent sequences:  A248928 A248929 A248930 * A248932 A248933 A248934 KEYWORD nonn,cons,easy,fini,full AUTHOR Arkadiusz Wesolowski, Oct 17 2014 STATUS approved

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Last modified August 17 17:00 EDT 2019. Contains 326059 sequences. (Running on oeis4.)