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A248931
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Decimal expansion of 2^1279 - 1, the 15th Mersenne prime A000668(15).
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19
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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)
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OFFSET
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386,3
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COMMENTS
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The 13th through the 17th Mersenne primes were found in 1952 by Raphael M. Robinson, using SWAC.
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LINKS
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FORMULA
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EXAMPLE
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10407932194664399081925240327364085538615262247266704805319112350403608...
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MATHEMATICA
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RealDigits[2^1279 - 1, 10, 100][[1]] (* G. C. Greubel, Oct 03 2017 *)
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PROG
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(Magma) Reverse(Intseq(2^1279-1));
(PARI) eval(Vec(Str(2^1279-1)))
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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